#include<stdio.h> #include<math.h> int main() { int a,b,c; double s; double p; while(scanf("%d %d %d",&a,&b,&c)!=EOF) { p=(a+b+c)/2.0; s=sqrt(p*(p-a)*(p-b)*(p-c)); printf("%.2f",s); } return 0; }
Double click to view unformatted code.