Doubting My Should I Add a Loop?

[asz304]

I'm not sure how this works. If I need to put a loop before the first cout statement.

The Attempt at a Solution

include <iostream>
include <cmath>
using namespace std;

string name[number];
char letterGrade[number];
double mark[number];

int main(){

string name[number];
char letterGrade[number];
double mark[number];

  cout <<"Enter number of students";
  cin >> number;

  cout << " Enter the name ";
  cin >> name[number];

  cout << " Enter the mark ";
  cin >>  mark[number];

Is this right?
or should there be a loop before the first cout statement that holds till the third cin statement?

 

[dacruick]

if you just want to two numbers then you don't need anyones name first of all. Second, do you plan to input all of these numbers? If so, I would store the numbers first into an array, and then manipulate the arrays separately. running a loop the size of your class and inputting them would be an annoying way to carry through this.

 

[Mark44]

1. Your three arrays all have number elements, so unless you're doing something fancy with dynamically-allocated arrays, number needs to be a constant that is known at compile time.

2. You have declared the three arrays twice each: once at the gobal level, and once inside main.

3. If you have a small number of student names and their letter grades and marks to enter, you can use a for loop that looks like this:

for (int i = 0; i < number; i++)
{
  cout << "Student name: ";
  cin >> name[i];
  // Prompt for letter grade in a similar way
  // Prompt for mark in a similar way
}