求助

#include <stdio.h>
int main(){
    int a,b,c;
    scanf("%d %d %d",&a,&b,&c);
    if(a+b<c||a+c<b||b+c<a)
    {printf("Not triangle\n");
  return 0;}
    if(a*a+b*b==c*c||a*a+c*c==b*b||b*b+c*c==a*a)
    printf("Right triangle\n"); 
    if(a*a+b*b>c*c&&a*a+c*c>b*b&&b*b+c*c>a*a)
    printf("Acute triangle\n");
    if(a*a+b*b<c*c&&a*a+c*c<b*b&&b*b+c*c<a*a)
    printf("Obtuse triangle\n");
    if(a==b||a==c||b==c)
    printf("Isosceles triangle\n");
    if(a==b&&b==c)
    printf("Equilateral triangle\n");
return 0;}