C Program to Check if a given Integer is Positive or Negative

his C Program checks if a given integer is positive or negative. Here if a number is greater than 0 then that number is a positive number. If a number is less than 0 then the number is negative number.

Here is source code of the C program which checks a given integer is positive or negative. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

1. /*

2.  * C program to check whether a given integer is positive

3.  * or negative

4.  */

5. #include <stdio.h>

7. void main()

8. {

9.     int number;

11.     printf("Enter a number \n");

12.     scanf("%d", &number);

13.     if (number >= 0)

14.         printf("%d is a positive number \n", number);

15.     else

16.         printf("%d is a negative number \n", number);

17. }

$ cc pgm5.c
$ a.out
Enter a number
-10
-10 is a negative number
 
$ a.out
Enter a number
45
45 is a positive number