#include <stdio.h>
int main()
{
int a,b,c,b2,a2,c2;
printf("enter the three sides of a triangle ");
scanf("%d%d%d",&a,&b,&c);
a2=a*a;
b2=b*b;
c2=c*c;
if(a==b && b==c && c==a)
printf("its an equilateral triangle ");
else if((a2+b2==c2)||(a2+c2==b2)||(c2+b2==a2))
{
if((a==b && b!=c && a!=c) || (b==c && a!=b && c!=a)||(c==a && c!=b && a!=b))
printf("its a right angled isoceles triangle ");
else
printf("its a right angled scalene triangle ");
}
else if((a==b && b!=c && a!=c) || (b==c && a!=b && c!=a)||(c==a && c!=b && a!=b))
printf("its an isoceles triangle ");
else if(a!=b!=c)
printf("its a scalene triangle ");
}