简单的等边/等腰/不等边三角形的判断！

#include
int main()

{
 int a,b,c;
 printf("please input three numbers:\n");
 scanf("%d,%d,%d",&a,&b,&c);
 if(a==b&&a==c)
  printf("this trigon is dengbian\n");
 else if(a==b||a==c||b==c)
 printf("this trigon is dengyao\n");
 else
 printf("this trigon is budengbian\n");

 return 0;

}