정올 582 : 함수2-자가진단4

My Solution

#include<stdio.h>
#include<math.h>
float formula(int area){
    float r;
    r=sqrt(area/3.14);
    return r;
}
int main(void){
    int area;
    scanf("%d", &area);
    printf("%.2f",formula(area));
    return 0;
}