Write a C program to input side of a triangle and check whether triangle is valid or not using if else. How to check whether a triangle can be formed or not if sides of triangle is given using if else in C programming. Logic to check triangle validity if sides are given in C program.

1. /**
2.  * C program to check whether a triangle is valid or not using logical AND operator
3.  */
4. 
   
5. #include <stdio.h>
6. 
   
7. int main()
8. {
9.     int side1, side2, side3;
10. 
    
11.     /* Input all three sides of a triangle */
12.     printf("Enter three sides of triangle: \n");
13.     scanf("%d%d%d", &side1, &side2, &side3);
14. 
    
15.     if((side1 + side2 > side3) && (side1 + side3 > side2) && (side2 + side3 > side1))
16.     {
17.         printf("Triangle is valid.");
18.     }
19.     else
20.     {
21.         printf("Triangle is not valid.");
22.     }
23. 
    
24.     return 0;
25. }

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