code. compile. run. debug. share.
#pragma warning(disable:4996)
#include <stdio.h>
#include <math.h>
int isPrime(int num);
int isPrime(int num){
if (num<=1) return 0;
for (int i = 2; i <= sqrt(num); ++i){
if (num%i == 0) return 0;
}
return 1;
}
int main()
{
int num;
printf("정수를 입력하세요: ");
scanf("%d", &num);
if (isPrime(num)){
printf("%d는 소수입니다.\n", num);
}
else{
printf("%d는 소수가 아닙니다.\n", num);
}
return 0;
}
Compiling Program...
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