Program to check type of triangle.......

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf("\n Enter lengths of 3 sides of triangle :   " );
scanf("%d%d%d",&a,&b,&c);


if( a==b && b==c)
{
printf("\n This is an equilateral triangle");
}
else if((a*a)== (b*b) + (c*c) ||(b*b) == (a*a) + (c*c) || (c*c)== (a*a) +(b*b))
{
printf("\n This is a right angled triangle");
}
else if(a==b || b==c || a==c)
{
printf("\n This triangle is isosceles triangle");
}
else
{
printf("\n This triangle is neither equilateral nor isosceles and not rigt angled triangle");
}
getch();
}