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