题解 | #三角形判断#

#include<stdio.h>
int main()
{ 
  int a,b,c;
  while(scanf("%d %d %d",&a,&b,&c)!=EOF)
  {
    getchar();
    if((a>=(b+c))||(b>=(a+c))||(c>=(a+b))) 
     printf("Not a triangle!\n");
    else{
    if(a==b&&b==c)
     printf("Equilateral triangle!\n");
    else if(((a==b)&&b!=c)||((a==c)&&c!=b)||((b==c)&&c!=a))
     printf("Isosceles triangle!\n");
    else
     printf("Ordinary triangle!\n");
        }
  }
    return 0;
}