Why is the array not reading from the txt file

In summary, the code creates a program that searches for specific series of numbers in a set of arrays. It uses vectors and a sorting algorithm to compare the given numbers to the arrays and determine in which vector the series was found. The code also reads in numbers from a file to be used in the comparison.
  • #1
theisonews
3
0
help me with this vector program

i want to create a program that will have an arraycalled array1[] of 30 sets of 3 one digit numbers i.e 804, 450,430 etc)

i will have 13 vector containersor arrays defined with a series of 3 one digit numbers. i want the program to find any series of numbers that is array1[] in any of the 13 vectors. and it will tell me in which vector the series was found in

also the order of the number shouldn't matter for example vector<int> first_tier (324)

the program should compare the values of one vector to an other vector for reoccuring series and it finds it in first_tier because 3 so which function do i use to do this. this is what i got so far

#include <iostream>
#include <algorithm>


using namespace std;

int * p; // points to array element


int main()

{
int First_tier[]={409 , 508 , 509, 607, 608 ,707 , 139 , 148 , 149 , 157 , 158 ,166 , 167 ,229 , 238 , 239 ,247 , 248 ,256 ,257 ,266 ,337 ,338 ,346 ,347 , 355 , 356 , 445 , 446 ,455};
int second_tier[]={309 , 408 , 507 , 606 , 609 ,708 ,129 ,138 , 147 , 156 , 159 ,168 ,177 , 228 , 237 , 246 , 249 , 255 , 258 , 267 , 336 , 339 , 345 , 348 , 357 , 366 , 444 , 447 , 456 , 555};
int third_tier[]={209,308,407,506,709,808,119,128,137,146,155,169,178,227,236,245,259,268,277,335,344,349,358,367,448,457,466,556};
int fourth_tier[]={208,307,406,505,809,118,127,136,145,179,188,226,235,244,269,278,334,359,368,377,449,458,467,557,566};
int fifth_tier[]={900,108,207,306,405,909,117,126,135,144,189,225,234,279,288,333,369,378,459,468,477,558,567,666};
int sixth_tier[]={800,107,206,305,404,116,125,134,199,224,233,289,379,388,469,478,559,568,577,667};
int seventh_tier[]={700,106,205,304,115,124,133,223,299,389,479,488,569,578,668,677};
int eighth_tier[]={600,105,204,303,114,123,222,399,489,579,588,669,678,777};
int ninth_tier[]={500,104,203,113,122,499,589,679,688,778};
int tenth_tier[]={400,103,202,112,599,689,779,788};
int eleventh_tier[]={300,102,111,699,789,888};
int twelve_tier[]={200,101,799,889};
int thirteenth_tier[]={100,899,999};


//numbers to be found in the above arrays.
int previous_pick_3_numbers[]{346,794,861,529,347,925,196,969,243,837,740,025,822,809,454,843942,510,573,346}


return 0;

}
 
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  • #2
the code compiles and runs but i don't think its reading from the file. the pick 3 array is suppose to read from the file.

below is the code

Code: 
// theisonewscpp.cpp : Defines the entry point for the console application.
//

#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>
#include <string>

using namespace std;

//bool myfunction (int i,int j) { return (i<j); }

int main()

{
    ifstream myfile;
    int f,g;
  
	// Arrays that will be copyed into vectors below.
	int one[]={409 , 508 , 509, 607, 608 ,707 , 139 , 148 , 149 , 157 , 158 ,166 , 167 ,229 , 238 , 239 ,247 , 248 ,256 ,257 ,266 ,337 ,338 ,346 ,347 , 355 , 356 , 445 , 446 ,455};
	int two[]={309 , 408 , 507 , 606 , 609 ,708 ,129 ,138 , 147 , 156 , 159 ,168 ,177 , 228 , 237 , 246 , 249 , 255 , 258 , 267 , 336 , 339 , 345 , 348 , 357 , 366 , 444 , 447 , 456 , 555};
	int three[]={209,308,407,506,709,808,119,128,137,146,155,169,178,227,236,245,259,268,277,335,344,349,358,367,448,457,466,556};
	int four[]={208,307,406,505,809,118,127,136,145,179,188,226,235,244,269,278,334,359,368,377,449,458,467,557,566};
	int five[]={900,108,207,306,405,909,117,126,135,144,189,225,234,279,288,333,369,378,459,468,477,558,567,666};
	int six[]={800,107,206,305,404,116,125,134,199,224,233,289,379,388,469,478,559,568,577,667};
	int seven[]={700,106,205,304,115,124,133,223,299,389,479,488,569,578,668,677};
	int eight[]={600,105,204,303,114,123,222,399,489,579,588,669,678,777};
	int nine[]={500,104,203,113,122,499,589,679,688,778};
	int ten[]={400,103,202,112,599,689,779,788};
	int eleven[]={300,102,111,699,789,888};
	int twelve[]={200,101,799,889};
	int thirteen[]={100,899,999};
//check to see if file opens
ifstream in("C:\\Documents and Settings\\fpadilla\\My Documents\\file.txt", ios::in);
 
if (!in) {
    cout << "Cannot open the input file.\n";
    return 0;
}


	// array that will be compared from
	int previous_pick_3_numbers[1125];
	
    
	//throw out commas
    char throwOut;
    
for (g = 0; g < 1125; g++)
    { //Input the data from the file, 
   
        in >> previous_pick_3_numbers[g];
    }//End for g
  in >> throwOut; // read in comma and ignore it.}
in.close(); //Close the input file
    
    
    
    char* tier[13] = {"one","two","three","four","five","six","seven","eight","nine","ten","eleven","twelve","thirteen"};

	vector<int> pick3(previous_pick_3_numbers,previous_pick_3_numbers+20);
	
	vector<int> firsts_tier(one,one+30);
	vector<int> seconds_tier(two,two+30);
	vector<int> third_tier(three,three+28);
	vector<int> fourths_tier(four,four+26);
	vector<int> fifths_tier(five,five+24);
	vector<int> sixths_tier(six,six+20);
	vector<int> sevenths_tier(seven,seven+16);
	vector<int> eighths_tier(eight,eight+14);
	vector<int> ninths_tier(nine,nine+10);
	vector<int> tenths_tier(ten,ten+8);
	vector<int> elevenths_tier(eleven,eleven+6);
	vector<int> twelves_tier(twelve,twelve+4);
	vector<int> thirteenths_tier(thirteen,thirteen+4);

	vector<vector<int> > all_vector;
	all_vector.push_back(firsts_tier);
	all_vector.push_back(seconds_tier);
	all_vector.push_back(third_tier);
	all_vector.push_back(fourths_tier);
	all_vector.push_back(fifths_tier);
	all_vector.push_back(sixths_tier);
	all_vector.push_back(sevenths_tier);
	all_vector.push_back(eighths_tier);
	all_vector.push_back(ninths_tier);
	all_vector.push_back(tenths_tier);
	all_vector.push_back(elevenths_tier);
	all_vector.push_back(twelves_tier);
	all_vector.push_back(thirteenths_tier);

	vector<char*> tiers_str(tier, tier+13);

	int vnb = 13;

	char curr_pick[4];


	// using default comparison:

	for(int i =0; i<all_vector.size(); ++i)
	{
		vector<int> curr = all_vector[i];
		sort (curr.begin(), curr.end());
		cout << "\n";
		cout << "Looking in Tier " <<  tiers_str.at(i) << "\n";
		for (int j =0; j<sizeof(pick3); ++j)
		{
			sprintf(curr_pick,"%d",pick3[j]);
			if (binary_search(curr.begin(), curr.end(),pick3[j]))
				cout << curr_pick << " found in Tier " << tiers_str.at(i) << "!\n"; 
			else 
				cout << "not found.\n";
		}
	}
	system("pause");
	return 0;
}
 
  • #3
Well, firstly, let's get that code indented and formatted in an acceptable way (you seriously need to work on that):

Code: 
// theisonewscpp.cpp : Defines the entry point for the console application.
//

#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>
#include <string>

using namespace std;

//bool myfunction (int i,int j) { return (i<j); }

int main()
{
    ifstream myfile;
    int f, g;

    // Arrays that will be copyed into vectors below.
    int one[] = {409 , 508 , 509, 607, 608 , 707 , 139 , 148 , 149 , 157 , 158 , 166 , 167 , 229 , 238 , 239 , 247 , 248 , 256 , 257 , 266 , 337 , 338 , 346 , 347 , 355 , 356 , 445 , 446 , 455};
    int two[] = {309 , 408 , 507 , 606 , 609 , 708 , 129 , 138 , 147 , 156 , 159 , 168 , 177 , 228 , 237 , 246 , 249 , 255 , 258 , 267 , 336 , 339 , 345 , 348 , 357 , 366 , 444 , 447 , 456 , 555};
    int three[] = {209, 308, 407, 506, 709, 808, 119, 128, 137, 146, 155, 169, 178, 227, 236, 245, 259, 268, 277, 335, 344, 349, 358, 367, 448, 457, 466, 556};
    int four[] = {208, 307, 406, 505, 809, 118, 127, 136, 145, 179, 188, 226, 235, 244, 269, 278, 334, 359, 368, 377, 449, 458, 467, 557, 566};
    int five[] = {900, 108, 207, 306, 405, 909, 117, 126, 135, 144, 189, 225, 234, 279, 288, 333, 369, 378, 459, 468, 477, 558, 567, 666};
    int six[] = {800, 107, 206, 305, 404, 116, 125, 134, 199, 224, 233, 289, 379, 388, 469, 478, 559, 568, 577, 667};
    int seven[] = {700, 106, 205, 304, 115, 124, 133, 223, 299, 389, 479, 488, 569, 578, 668, 677};
    int eight[] = {600, 105, 204, 303, 114, 123, 222, 399, 489, 579, 588, 669, 678, 777};
    int nine[] = {500, 104, 203, 113, 122, 499, 589, 679, 688, 778};
    int ten[] = {400, 103, 202, 112, 599, 689, 779, 788};
    int eleven[] = {300, 102, 111, 699, 789, 888};
    int twelve[] = {200, 101, 799, 889};
    int thirteen[] = {100, 899, 999};

    //check to see if file opens
    ifstream in("C:\\Documents and Settings\\fpadilla\\My Documents\\file.txt", ios::in);

    if (!in)
    {
        cout << "Cannot open the input file.\n";
        return 0;
    }

    // array that will be compared from
    int previous_pick_3_numbers[1125];

    //throw out commas
    char throwOut;
    for (g = 0; g < 1125; g++)
    { //Input the data from the file,
        in >> previous_pick_3_numbers[g];
    }//End for g
    in >> throwOut; // read in comma and ignore it.}
    in.close(); //Close the input file

    char* tier[13] = {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen"};

    vector<int> pick3(previous_pick_3_numbers, previous_pick_3_numbers + 20);

    vector<int> firsts_tier(one, one + 30);
    vector<int> seconds_tier(two, two + 30);
    vector<int> third_tier(three, three + 28);
    vector<int> fourths_tier(four, four + 26);
    vector<int> fifths_tier(five, five + 24);
    vector<int> sixths_tier(six, six + 20);
    vector<int> sevenths_tier(seven, seven + 16);
    vector<int> eighths_tier(eight, eight + 14);
    vector<int> ninths_tier(nine, nine + 10);
    vector<int> tenths_tier(ten, ten + 8);
    vector<int> elevenths_tier(eleven, eleven + 6);
    vector<int> twelves_tier(twelve, twelve + 4);
    vector<int> thirteenths_tier(thirteen, thirteen + 4);

    vector<vector<int> > all_vector;
    all_vector.push_back(firsts_tier);
    all_vector.push_back(seconds_tier);
    all_vector.push_back(third_tier);
    all_vector.push_back(fourths_tier);
    all_vector.push_back(fifths_tier);
    all_vector.push_back(sixths_tier);
    all_vector.push_back(sevenths_tier);
    all_vector.push_back(eighths_tier);
    all_vector.push_back(ninths_tier);
    all_vector.push_back(tenths_tier);
    all_vector.push_back(elevenths_tier);
    all_vector.push_back(twelves_tier);
    all_vector.push_back(thirteenths_tier);

    vector<char*> tiers_str(tier, tier + 13);

    int vnb = 13;
    char curr_pick[4];

    // using default comparison:
    for (int i = 0; i < all_vector.size(); ++i)
    {
        vector<int> curr = all_vector[i];
        sort(curr.begin(), curr.end());
        cout << "\n";
        cout << "Looking in Tier " <<  tiers_str.at(i) << "\n";
        for (int j = 0; j < sizeof(pick3); ++j)
        {
            sprintf(curr_pick, "%d", pick3[j]);
            if (binary_search(curr.begin(), curr.end(), pick3[j]))
                cout << curr_pick << " found in Tier " << tiers_str.at(i) << "!\n";
            else
                cout << "not found.\n";
        }
    }
    system("pause");
    return 0;
}

Did you turn all the warnings on when compiling? I suggest you do so. A few complaints g++ made was that you are converting const char* to char*:

char* tier[13] = {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen"};

That should be:

const char* tier[13] = ... etc ...

You will want to change the vector also to add const:

vector<const char*> tiers_str(tier, tier + 13);

However, that's kind of a nasty way to initialize a vector from an array. Initializing vectors and such from arrays will become much nicer and easier in the next C++ standard (C++0x), but until then, this might save you from counting elements manually:

vector<int> firsts_tier(one, one + (sizeof(one) / sizeof(one[0])));

The compiler also complains about lines like this:

for (int i = 0; i < all_vector.size(); ++i)

The problem is that .size() doesn't return an int. It returns a value of type size_t. The for loop would better be written as:

for (size_t i = 0; i < all_vector.size(); ++i)

This line is also possibly a problem:

for (int j = 0; j < sizeof(pick3); ++j)

pick3 is a vector. Shouldn't you be using .size() here as well? Keep in mind that size() doesn't return an int, so you need to fix it like the previous one.

You shouldn't generally put "magic numbers" in your code. This kind of thing is a bad idea:

int previous_pick_3_numbers[1125];

for (g = 0; g < 1125; g++)

At least define a constant for that (the 1125). It'll save you hassle later, trust me. However, the whole idea of what you're doing right there is probably a bad one. If you go over, it will silently stop reading in numbers. If you're under, then you're wasting memory space at best, or trying to read numbers that aren't there at worst.

Why not read a variable number of ints into a vector until you hit the end of the file, instead? You put them in vector one a bit later, anyways.

I can't really test your program since I don't have the input file. But I'm not sure you're reading it in correctly. Are you supposed to be reading in and throwing out a comma between each number? Right now, it's outside the loop. Perhaps that's your main bug?

I tend to like to use istream::ignore to get past things like commas and such. You might want to look it up and see if it might not do it better.

One piece of extra advice: You might want to think about splitting that monolithic main() into some functions.

Anyways, that's what I see on my first pass through. Hope it helps.
 
  • #4
theisonews said:
the code compiles and runs but i don't think its reading from the file. the pick 3 array is suppose to read from the file.

I would recommend that you use either a console library, (or the standard IO) to actually print stuff out either to some standard IO whether its a console or some output log file.

If you're using windows you can use ::AllocConsole, but it would probably be smarter to use cout or something of that nature.

If your data ends up being junk, then its most likely going to be a pointer issue or something or that sort (wrong data type/format , bad index and so on).
 
  • #5
Grep said:
Well, firstly, let's get that code indented and formatted in an acceptable way (you seriously need to work on that):

Code: 
// theisonewscpp.cpp : Defines the entry point for the console application.
//

#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>
#include <string>

using namespace std;

//bool myfunction (int i,int j) { return (i<j); }

int main()
{
    ifstream myfile;
    int f, g;

    // Arrays that will be copyed into vectors below.
    int one[] = {409 , 508 , 509, 607, 608 , 707 , 139 , 148 , 149 , 157 , 158 , 166 , 167 , 229 , 238 , 239 , 247 , 248 , 256 , 257 , 266 , 337 , 338 , 346 , 347 , 355 , 356 , 445 , 446 , 455};
    int two[] = {309 , 408 , 507 , 606 , 609 , 708 , 129 , 138 , 147 , 156 , 159 , 168 , 177 , 228 , 237 , 246 , 249 , 255 , 258 , 267 , 336 , 339 , 345 , 348 , 357 , 366 , 444 , 447 , 456 , 555};
    int three[] = {209, 308, 407, 506, 709, 808, 119, 128, 137, 146, 155, 169, 178, 227, 236, 245, 259, 268, 277, 335, 344, 349, 358, 367, 448, 457, 466, 556};
    int four[] = {208, 307, 406, 505, 809, 118, 127, 136, 145, 179, 188, 226, 235, 244, 269, 278, 334, 359, 368, 377, 449, 458, 467, 557, 566};
    int five[] = {900, 108, 207, 306, 405, 909, 117, 126, 135, 144, 189, 225, 234, 279, 288, 333, 369, 378, 459, 468, 477, 558, 567, 666};
    int six[] = {800, 107, 206, 305, 404, 116, 125, 134, 199, 224, 233, 289, 379, 388, 469, 478, 559, 568, 577, 667};
    int seven[] = {700, 106, 205, 304, 115, 124, 133, 223, 299, 389, 479, 488, 569, 578, 668, 677};
    int eight[] = {600, 105, 204, 303, 114, 123, 222, 399, 489, 579, 588, 669, 678, 777};
    int nine[] = {500, 104, 203, 113, 122, 499, 589, 679, 688, 778};
    int ten[] = {400, 103, 202, 112, 599, 689, 779, 788};
    int eleven[] = {300, 102, 111, 699, 789, 888};
    int twelve[] = {200, 101, 799, 889};
    int thirteen[] = {100, 899, 999};

    //check to see if file opens
    ifstream in("C:\\Documents and Settings\\fpadilla\\My Documents\\file.txt", ios::in);

    if (!in)
    {
        cout << "Cannot open the input file.\n";
        return 0;
    }

    // array that will be compared from
    int previous_pick_3_numbers[1125];

    //throw out commas
    char throwOut;
    for (g = 0; g < 1125; g++)
    { //Input the data from the file,
        in >> previous_pick_3_numbers[g];
    }//End for g
    in >> throwOut; // read in comma and ignore it.}
    in.close(); //Close the input file

    char* tier[13] = {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen"};

    vector<int> pick3(previous_pick_3_numbers, previous_pick_3_numbers + 20);

    vector<int> firsts_tier(one, one + 30);
    vector<int> seconds_tier(two, two + 30);
    vector<int> third_tier(three, three + 28);
    vector<int> fourths_tier(four, four + 26);
    vector<int> fifths_tier(five, five + 24);
    vector<int> sixths_tier(six, six + 20);
    vector<int> sevenths_tier(seven, seven + 16);
    vector<int> eighths_tier(eight, eight + 14);
    vector<int> ninths_tier(nine, nine + 10);
    vector<int> tenths_tier(ten, ten + 8);
    vector<int> elevenths_tier(eleven, eleven + 6);
    vector<int> twelves_tier(twelve, twelve + 4);
    vector<int> thirteenths_tier(thirteen, thirteen + 4);

    vector<vector<int> > all_vector;
    all_vector.push_back(firsts_tier);
    all_vector.push_back(seconds_tier);
    all_vector.push_back(third_tier);
    all_vector.push_back(fourths_tier);
    all_vector.push_back(fifths_tier);
    all_vector.push_back(sixths_tier);
    all_vector.push_back(sevenths_tier);
    all_vector.push_back(eighths_tier);
    all_vector.push_back(ninths_tier);
    all_vector.push_back(tenths_tier);
    all_vector.push_back(elevenths_tier);
    all_vector.push_back(twelves_tier);
    all_vector.push_back(thirteenths_tier);

    vector<char*> tiers_str(tier, tier + 13);

    int vnb = 13;
    char curr_pick[4];

    // using default comparison:
    for (int i = 0; i < all_vector.size(); ++i)
    {
        vector<int> curr = all_vector[i];
        sort(curr.begin(), curr.end());
        cout << "\n";
        cout << "Looking in Tier " <<  tiers_str.at(i) << "\n";
        for (int j = 0; j < sizeof(pick3); ++j)
        {
            sprintf(curr_pick, "%d", pick3[j]);
            if (binary_search(curr.begin(), curr.end(), pick3[j]))
                cout << curr_pick << " found in Tier " << tiers_str.at(i) << "!\n";
            else
                cout << "not found.\n";
        }
    }
    system("pause");
    return 0;
}

Did you turn all the warnings on when compiling? I suggest you do so. A few complaints g++ made was that you are converting const char* to char*:

char* tier[13] = {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen"};

That should be:

const char* tier[13] = ... etc ...

You will want to change the vector also to add const:

vector<const char*> tiers_str(tier, tier + 13);

However, that's kind of a nasty way to initialize a vector from an array. Initializing vectors and such from arrays will become much nicer and easier in the next C++ standard (C++0x), but until then, this might save you from counting elements manually:

vector<int> firsts_tier(one, one + (sizeof(one) / sizeof(one[0])));

The compiler also complains about lines like this:

for (int i = 0; i < all_vector.size(); ++i)

The problem is that .size() doesn't return an int. It returns a value of type size_t. The for loop would better be written as:

for (size_t i = 0; i < all_vector.size(); ++i)

This line is also possibly a problem:

for (int j = 0; j < sizeof(pick3); ++j)

pick3 is a vector. Shouldn't you be using .size() here as well? Keep in mind that size() doesn't return an int, so you need to fix it like the previous one.

You shouldn't generally put "magic numbers" in your code. This kind of thing is a bad idea:

int previous_pick_3_numbers[1125];

for (g = 0; g < 1125; g++)

At least define a constant for that (the 1125). It'll save you hassle later, trust me. However, the whole idea of what you're doing right there is probably a bad one. If you go over, it will silently stop reading in numbers. If you're under, then you're wasting memory space at best, or trying to read numbers that aren't there at worst.

Why not read a variable number of ints into a vector until you hit the end of the file, instead? You put them in vector one a bit later, anyways.

I can't really test your program since I don't have the input file. But I'm not sure you're reading it in correctly. Are you supposed to be reading in and throwing out a comma between each number? Right now, it's outside the loop. Perhaps that's your main bug?

I tend to like to use istream::ignore to get past things like commas and such. You might want to look it up and see if it might not do it better.

One piece of extra advice: You might want to think about splitting that monolithic main() into some functions.

Anyways, that's what I see on my first pass through. Hope it helps.

thanks for that. when i get off work. i will give it an other try
 
  • #6
Code: 
for (g = 0; g < 1125; g++)
    {
        in >> previous_pick_3_numbers[g];
    }
  in >> throwOut;
in.close();

Look carefully at your input code. Your data file has a comma after each number, correct?

The statement "in >> previous_pick_3_numbers[g];" is performed 1125 times.

How many times is the statement "in >> throwOut;" (which is supposed to skip over the commas) performed?
 
  • #7


First I'd suggest making a vector of vectors rather than having 13 separate named variables.

Next, you can use std::includes or std::set_intersection to determine if one vector is a subset of another. So in pseudo-code:

for each vector in the vector list
check to see if the "main" vector is a subset of the current vector using std::includes
if yes, add a pointer to this vector in a separate vector of vector pointersiterate through your new filtered list
do whatever
 
Last edited:

1) Why is my array not displaying any data from the text file?

The most common reason for this issue is that the path to the text file is incorrect. Make sure that the file is in the same directory as your code or provide the correct file path in your code.

2) Why is my array displaying an empty string instead of the data from the text file?

This could be due to the text file being empty or not containing any data. Double check the contents of the text file to ensure it has the data you are trying to read.

3) Why is my array only displaying a single line of data from the text file?

This can happen if the code is only reading the first line of the text file. Make sure your code is looping through the entire file to capture all the data.

4) Why are the values in my array not matching the data in the text file?

There could be an issue with the format of the data in the text file. Check for any typos or formatting errors that could be causing the mismatch. Also, make sure the data is being split correctly into the array.

5) Why is my code throwing an error when trying to read from the text file?

There could be several reasons for this, such as a misspelled file name or incorrect file path. It could also be an issue with permissions, make sure the file is not set to read-only. Additionally, check for any syntax errors in your code that could be causing the error.

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