A Program to Check Whether a Number is Positive or Negative or Zero

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 <iostream>
  2. using namespace std;
  3. int main()
  4. {
  5.     double number;
  7.     cout << "Enter a number: ";
  8.     cin >> number;
  10.     // true if the given number is less than 0
  11.     if (number < 0.0)
  12.         cout << "It is  a negative number.";
  14.     // true if the given number is greater than 0
  15.     else if ( number > 0.0)
  16.         cout << "It is a positive number.";
  18.     // if both the test expression is false
  19.     else
  20.         cout << "It is 0";
  21.     return 0;
  22. }

Output:

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

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