C Program to Check Whether a Number is Positive or Negative

C Program to Check Whether a Number is Positive or Negative

C program to check whether a given number is positive or negative or zero; Through this tutorial, we will learn how to check whether given number a is positive, negative, or zero in c program.

C Program to Check Whether a Number is Positive or Negative

  • Algorithm to Check Whether a Number is Positive or Negative
  • C Program to Check Whether a Number is Positive or Negative using If Statement
  • C Program to Check Whether a Number is Positive or Negative Using Nested if…else

Algorithm to Check Whether a Number is Positive or Negative

Use the following algorithm to write a c program to check whether a given number is positive or negative or zero; as follows:

  • Start program
  • Read the a number in program and store it into variable.
  • Check the number is positive, negative or zero using if or nested if else statement.
  • Print a number positivem negative or zero.
  • Stop program.

C Program to Check Whether a Number is Positive or Negative using If Statement

/**
 * C program to check positive negative or zero using if else
 */

#include <stdio.h>

int main()
{
    int num;
    
    /* Input number from user */
    printf("Enter a number: ");
    scanf("%d", &num);
    

    if(num > 0)
    {
        printf("Number is POSITIVE");
    }
    else if(num < 0)
    {
        printf("Number is NEGATIVE");
    }
    else
    {
        printf("Number is ZERO");
    }

    return 0;
}

The output of the above c program; as follows:

Enter a number: 10
Number is POSITIVE

C Program to Check Whether a Number is Positive or Negative Using Nested if…else

#include <stdio.h>
int main() {
    double num;
    printf("Enter a number: ");
    scanf("%lf", &num);
    if (num <= 0.0) {
        if (num == 0.0)
            printf("Number is ZERO");
        else
            printf("Number is NEGATIVE");
    } 
    else
        printf("Number is POSITIVE");
    return 0;
}

The output of the above c program; as follows:

Enter a number: 12.3
Number is POSITIVE

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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