View Code of Problem 24

#include<stdio.h>
#include<math.h>
#include<string.h>
int main(int argc, char** argv) {

	/*
	输入三角形的边长a,b,c,求三角形的面积S。

	p =周长的一半
	p * (p - a) * (p - b) * (p - c)
	*/

	int a , b , c;
	while(true) {
		scanf("%d %d %d" , &a , &b , &c );
		double p = ( a + b + c )/2.0;
		double s = sqrt( 	p * (p - a) * (p - b) * (p - c)  );
		printf("%.2lf\n" , s);
	}
	return 0 ;
}












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