Program: 86

If the three sides of a triangle are entered through the keyboard, write a c program to check whether the triangle is isosceles, equilateral, scalene or right angled triangle

Output:

 Enter the first side: 3
 Enter the second side: 4
 Enter the third side: 5
 Triangle is right angled

 Enter the first side: 2
 Enter the second side: 2
 Enter the third side: 3
 Triangle is isosceles.

 Enter the first side: 3
 Enter the second side: 3
 Enter the third side: 3
 Triangle is equilateral.