check prime numbers in c++
#include <iostream> using namespace std; int main() { int n, i, m=0, flag=0; cout << "Enter the Number to check Prime: "; cin >> n; m=n/2; for(i = 2; i <= m; i++) { if(n % i == 0) { cout<<"Number is not Prime."<<endl; flag=1; break; } } if (flag==0) cout << "Number is Prime."<<endl; return 0; }
