C program to check whether it is positive number or not

C program to check whether it is positive number or not:

This program takes a number from the user and checks whether that number is either positive or negative or zero.

#Example

  #include <stdio.h>
  void main()
  {
     double number;

     printf("Enter a number: ");
     scanf("%lf", &number);

     // true if number is less than 0
     if (number < 0.0)
        printf("You entered a negative number.");

     // true if number is greater than 0
     else if ( number > 0.0)
        printf("You entered a positive number.");

     // if both test expression is evaluated to false
     else
        printf("You entered 0.");
  }

Output

   Enter a number: 5
   You entered a positive number.