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Source Code
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#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){ //sqrt()κ° μ°μ°μ 1/2 μ€μ¬μ€ -> μκ° λ¨μΆ
if (num % i == 0){
return 0;
}
}
return 1;
}
int main(){
int num;
printf("μ μλ₯Ό μ
λ ₯νμΈμ : ");
scanf("%d", &num);
if (isPrime(num)){
printf("%dλ μμμ
λλ€.\n", num);
}
else{
printf("%dλ μμκ° μλλλ€.\n", num);
}
return 0;
}
Compiling Program...
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Text
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