C program to find square of given number using function. Use of function with an argument and a return value

C program to find square of given number using function. Use of function with an argument and a return value

1. #include <stdio.h>
2. int square(int); // function prototype declaration.
3. void main()
4. {
5.      int number, answer;
6.      printf("Enter your number:");
7.           scanf("%d", &number);
8.      answer = square(number); //Call function.
9.      printf("Square of %d is %d.", number, answer);
10.      }
11. int square(int n)
12. {
13.      //function logic is written here..
14.           return(n*n); //This will return answer to main function.
15.           } 

Output

Enter your number:5

Square of 5 is 25

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