Program: 85

If the three sides of a triangle are entered through the keyboard, write a c program to check whether the triangle is valid or not. The triangle is valid if the sum of two sides is greater than the largest of the three sides.

Output:

Enter the first side of triangle: 2
Enter the second side of triangle: 3
Enter the third side of triangle: 4
Triangle is valid

 Enter the first side of triangle: 4
 Enter the second side of triangle: 2
 Enter the third side of triangle: 1
 Triangle is not valid