Why are there three variables? Also, the variable name should be suggestive of what it will be used for. Instead of x, y, or z, I would use one variable: letterGrade, of type char.Jesse H. said:So if I'm designated the input as a variable I.e
cin >>x>>y>>z;
No, but you have to have logic that checks the value of the input variable to see if it is 'A', 'B', 'C', 'D', or 'F'.Jesse H. said:Then I would have to define A B C D or F for every input?
Jesse H. said:So I would do
if (input=='A')
x=4; etc.. for every letter grade and every variable, x, y, z?
if (letterGrade == 'A')
{
numberGrade = 4;
}
else if (letterGrade == 'B')
{
numberGrade = 3;
}
// and so onWhy do you think you need 10 variables? All you need are two - one for the input letter grade and one for the output number grade.Jesse H. said:Thanks I got out figured out a little bit ago, I was just choosing x, y, z as an example my actual variables were c1-c5 and g1-g5.
Jesse H. said:Sorry, I wasn't clear, the assignment called for the program to calculate GPA based on 5 inputs. And in my code I made comments that told the grader what I was doing and what the variables stood for.
Here is my code, its already been submitted but when asking for help in writing it the TA did pick a little at my "structure" but wasn't clear on what exactly I could improve on. Is there any tips you could suggest about cleaning up the code making it easier to read?
Code:#include <iostream> using namespace std; int main () { //Defining variables that will be used during code. Where c stands for credit hours and g stands for the corresponding grade float c1, c2, c3, c4, c5; char g1, g2, g3, g4, g5; //Asking for input from user cout <<"Please enter the number of credit hours for each class followed by the grade obtained in each class:"; // Input is in the following form: 3 4 3 4 3 A C B A B. cin >> oc1>> c2>> c3>> c4>> c5>> g1>> g2>> g3>> g4>> g5; //Defining the the grade inputs A, B, C, D, and F in terms of a numerical value. if (g1 == 'A') g1=4; if (g1 == 'B') g1=3; if (g1 == 'C') g1=2; if (g1 == 'D') g1=1; if (g1 == 'F') g1=0; if (g2 == 'A') g2=4; if (g2 == 'B') g2=3; if (g2 == 'C') g2=2; if (g2 == 'D') g2=1; if (g2 == 'F') g2=0; if (g3 == 'A') g3=4; if (g3 == 'B') g3=3; if (g3 == 'C') g3=2; if (g3 == 'D') g3=1; if (g3 == 'F') g3=0; if (g4 == 'A') g4=4; if (g4 == 'B') g4=3; if (g4 == 'C') g4=2; if (g4 == 'D') g4=1; if (g4 == 'F') g4=0; if (g5 == 'A') g5=4; if (g5 == 'B') g5=3; if (g5 == 'C') g5=2; if (g5 == 'D') g5=1; if (g5 == 'F') g5=0; //Calculating and printing the final GPA. cout << "Your GPA is:"<< ((c1 * g1)+(c2 * g2)+(c3 * g3)+(c4 * g4)+(c5 * g5))/(c1+c2+c3+c4+c5)<<"\n"; return 0; }
#include <iostream>
using namespace std;
const int NUMCLASSES = 5;
int main ()
{
float creditHours[NUMCLASSES];
char letterGrades[NUMCLASSES];
float numberGrades[NUMCLASSES];
float totalCredits = 0.0;
float GPA = 0.0;
// Ask for input from user
cout <<"Enter the number of credit hours for each class followed by the grade obtained in each class:";
// Input is in the following form: <credits> <grade> <credits> <grade> ...
for (int j = 0; j < NUMCLASSES; j++)
{
cin << creditHours[j];
cin << letterGrades[j];
}
// Convert letter grades A, B, C, D, and F to numerical values.
for (int j = 0; j < NUMCLASSES; j++)
{
if (letterGrades[j] == 'A' || letterGrades[j] == 'a' )
{
numberGrades[j] = 4.0;
}
else if (letterGrades[j] == 'B' || letterGrades[j] == 'b' )
{
numberGrades[j] = 3.0;
}
else if (letterGrades[j] == 'C' || letterGrades[j] == 'c' )
{
numberGrades[j] = 2.0;
}
else if (letterGrades[j] == 'D' || letterGrades[j] == 'd' )
{
numberGrades[j] = 1.0;
}
else
{
numberGrades[j] = 0.0;
}
} // Calculate the final GPA.
for (j = 0; j < NUMCLASSES; j++)
{
totalCredits += creditHours[j];
GPA += creditHours[j] * numberGrades[j];
}
GPA = GPA / totalCredits;
// Display the GPA.
cout << "Your GPA is:"<< GPA <<"\n";
return 0;
}but you could use math to convert a character grade 'A' through 'F' to an integer value 4 through 0, using the example I showed above, which would reduce the number of if statements.Jesse H. said:Yeah we have not learned about loops and arrays, we are actually specifically told we can't use them in that assignment, and actually the next assignment calls for us to improve upon our code using loops and more conditional statements but once again, no arrays.
A simple input output program in C++ is a basic program that takes input from the user, performs some operations on it, and displays the result. It is often used as a starting point for learning the language and understanding how to work with user input and output.
The essential components of a simple input output program in C++ include a header file (e.g.
To take user input in a simple input output program in C++, you can use the
int x;
cin >> x;
This will prompt the user to enter a value, and the value will be stored in the variable "x".
To display output in a simple input output program in C++, you can use the
int x = 5;
cout << "The value of x is: " << x;
This will display the message "The value of x is: 5" to the user.
Yes, you can use multiple input and output statements in a simple input output program in C++. This allows you to take multiple input values and perform multiple operations, and then display the results to the user. Just make sure to use the correct syntax and data types for your input and output statements.