Question

write a c++ program to sum of two prime number using for if loop concept

Answer 1

The program to check weather the numbers is prime or not . If it is prime then it will add it.

#include <iostream>

using namespace std;

int main()

{

int n, i;

bool isPrime = true;

cout << "Enter a positive integer: ";

cin >> n;

for(i = 2; i <= n / 2; ++i)

{

if(n % i == 0)

{

isPrime = false;

break;

}

}

if (isPrime)

cout << "This is a prime number";

cout << "sum = "+(a+b);

else

cout << "This is not a prime number";

return 0;

}