Question

In C++

Write a simple program to generate random integers between X and Y and store them in a file, one number per line. The user should input the number of elements to generate and the boundary numbers X and Y (e.g. the inputs 100, 0, 999 mean your program should generate a list of 100 integers with values between 0 and 999, inclusive).

Answer 1

The following code can be used to complete the given problem in C++.

1. First we open the file using an ofstream object.
2. Then we take input for all three values, i.e. number of values to be generated and min, max limit.
3. Then we run a while loop and generate a random number each time, adding it to the file.

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int num, min, max;
    
    ofstream myfile;
    myfile.open ("example.txt");
    
    cout<<"Enter number of elements to be generated : ";
    cin>>num;
    
    cout<<"Enter the values : ";
    cin>>min>>max;
    
    while(num--)
    {
        int randNum = rand()%(max-min + 1) + min;
        myfile<<randNum;
        myfile<<"\n";
    }
    
    myfile.close();
    return 0;
}

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