A Program to Check a Number is Positive or Negative

In this example, we are giving a program which is useful to check whether a number given by the user is positive or negative or zero.

Program to check Positive or Negative or Zero:

  1. #include <stdio.h>
  2. int main()
  3. {
  4.     double number;
  6.     printf("Enter a number: ");
  7.     scanf("%lf", &number);
  9.     // true if the given number is less than 0
  10.     if (number < 0.0)
  11.         printf("It is  a negative number.");
  13.     // true if the given number is greater than 0
  14.     else if ( number > 0.0)
  15.         printf("It is a positive number.");
  17.     // if both the test expression is false
  18.     else
  19.         printf("It is 0");
  20.     return 0;
  21. }

Output:

Enter a number: -9
It is a negative number.

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