#include <stdio.h> #include<Windows.h> void main() { int a,b,c,s; printf("please enter three integers:"); scanf("%d%d%d",&a,&b,&c); if (a*a+b*b=c*c) s=a*b/2; printf("%d",s); else if (b*b+c*c=a*a) s=b*c/2; printf("%d",s); else if (a*a+c*c=b*b) s=a*c/2; printf("%d",s); else printf("sorry,it cannot be a triangle."); Sleep(2000); }