P122 第三章 10题 三角形的面积及三边是否能组成三角形的判断

<span style="font-family:FangSong_GB2312;font-size:18px;">#include<stdio.h>
#include<math.h>

void Judge(float a, float b, float c)
{

float S,p;
if(a+b>c&&a+c>b&&b+c>a)
{
p = (a+b+c)/2;
S = sqrt(p*(p-a)*(p-b)*(p-c));
printf("该三角形面积为：%f\n",S);
printf("You do a good job\n");
}
else
printf("Oh, no,you should try again\n");
}
void main()
{
float a,b,c;
while(1)
{
printf("please input 3 ints:\n");
scanf("%f %f %f",&a,&b,&c);
Judge(a,b,c);
}  </span><span style="font-family:SimSun;font-size:18px;">
}</span>

<span style="font-size:18px;"><img src="http://img.blog.csdn.net/20150515233846534?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvem9tYmllX2xqaA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />
</span>