View Code of Problem 24

#include<stdio.h>
#include<math.h>
//输入有多组数据。
//每组数据包括三个正整数a,b,c。
int main(){
	int a, b, c;
	double p = 0;\
	while(scanf("%d %d %d", &a, &b, &c) != EOF) {
		p = (a+b+c)/2.0;
		double s = 0, k = 0;
		k = p*(p-a)*(p-b)*(p-c);
		s = sqrt(k);
		printf("%.2f", s);
	} 
	return 0;
} 

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