1-Have the user input a number.
2-Output whether or not the number is a prime.
HINT- Think of divisibility of the number by anything.
Here's my model of the program:
- Code: Select all
#include <iostream>
using namespace std;
int main(){
long int number;
cout << "This is a program that tells whether a number is prime or not." << endl;
cout << "Enter the number: ";
cin >> number;
for (long int i = 2;i < number;i++) {
long int test = number % i;
if (test == 0) {
cout << "This number is not a prime number." << endl;
break;
} else {
if (i == number - 1 && test != 0) {
cout << "This number is a prime number." << endl;
} else {
continue;
}
}
}
system("pause");
return 0;
}
Good luck.
