Submission

Score: 80

User: bbcctxp

Problemset: จำนวนเฉพาะ (2560)

Language: c

Time: 0.001 second

Submitted On: 2025-10-09 22:24:48

#include <stdio.h>

int is_prime(int num){
    if(num <= 1) return 0;
    for(int i =2; i*i <=num; i++){
        if(num%i==0) return 0;
    }return 1;
}

int main(){
    int n;
    scanf("%d", &n);

     for(int i=2;i<=n;i++){
        if(is_prime(i))
            printf("%d\n",i);
    }
    return 0;
}