Here is a C++ program to print all Prime numbers between 1 to 100.
C++ program to print all prime numbers between 1 to N
#include<iostream>
using namespace std;
int main(){
int N, i, j, isPrime, n;
cout << "Enter the value of N\n";
cin >> N;
// For every number between 2 to N, check
// whether it is prime number or not
for(i = 2; i <= N; i++){
isPrime = 0;
// Check whether i is prime or not
for(j = 2; j <= i/2; j++){
// Check If any number between 2 to i/2 divides I
// completely If yes the i cannot be prime number
if(i % j == 0){
isPrime = 1;
break;
}
}
if(isPrime==0 && N!= 1)
cout << i << " ";
}
return 0;
}
Output
Enter the value of N 50 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47
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