Question

C++ language. please provide detailed comments (for beginners) and use easy to understand/trace code.

Thank you

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Given positive integers n, a, and b, print the first n positive integers that are a multiple of
a, b, or both.
For example: n = 6, a = 2 and b = 3, you should print: 2 3 4 6 8 9

Answer 1

#include <iostream>

using namespace std;

int main()
{
    int n, a, b;
    
    // promting and reading value for n
    cout<<"Enter value for n: ";
    cin>>n;
    
    // promting and reading value for a
    cout<<"Enter value for a: ";
    cin>>a;
    
    // promting and reading value for b
    cout<<"Enter value for b: ";
    cin>>b;
    
    int i = 0, value = 1;
    while(i<n){
        // checking a is divisible by either of a or b
        if(value%a==0 || value%b==0){
            // printing value 
            printf("%d ",value);
            // incrementing value of i by 1
            i++;
        }
        // incrementing value by 1
        value++;
    }
    
    return 0;
}