Question

3. Make a program that determines whether two input numbers are coprime or not. Two numbers are coprime if the only positive number that perfectly divides them is 1. In other words, two numbers can be coprime only if their gcd is 1.

Answer 1

#include <iostream.h>
void main(){
int A, B, minAB;
int i;
bool prime = true;
cout<<"Enter number A: ";
cin>>A;
cout<<"Enter number B: ";
cin>>B;
if (A<=B) minAB = A;
else minAB = B;
i=2;
while ((i<=minAB)&&(prime==true)){
& if ((A%i==0)&&(B%i==0)) prime = false;
& i++;
}
if (prime == true) cout<<"A and B are coprime.";
else cout<<"A and B are not coprime.\r\n";
}