Submission

Score: 100

User: winwin1054

Problemset: จำนวนเฉพาะก่อนหน้า

Language: c

Time: 0.001 second

Submitted On: 2026-03-28 08:20:35

#include <stdio.h>
#include <math.h>

int main() {
	int n,a[5],j=0,s;
	scanf("%d",&n);
	n--;
	while(j!=5) {
	    s = 1;
	    for(int i=2;i<=sqrt(n);i++) {
	        if(n%i==0)
	        {
	            s = 0;
	            break;
	        }
	    }
	    if(s) a[j]=n,j++;
	    n--;
	}
	for(int i=4;i>=0;i--) {
	    printf("%d ",a[i]);
	}
}