如何判断三角形是锐角,钝角,还是直角三角形答:include<stdio.h> include<math.h> define pai 3.1415926 int main(){ int a,b,c;double theta,temp;printf("从小到大输入三条非负整数边: a,b,c \n");scanf("%d%d%d",&a,&b,&c);if(0==a*a+b*b-c*c){ printf("直角三角形\n");return 0;} temp=(double)(a*a+b*b-c...