C Program to check if a Number is Positive or Negative

Published on December 13, 2016 by Senthil Kumar

Filed under C

Last modified December 13, 2016

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Write a program in C to check whether a input number is a positive or negative number.

How to check if a number is positive or negative in C ?

#include <stdio.h>
int main()
    printf("Abundantcode.com coding samples\n");
    double input;

    printf("Enter a number: ");
    scanf("%lf", &input);
    if (input == 0.0)
        printf("The entered number is zero");
    else if(input < 0)
        printf("The entered number is a negative number.");
        printf("The entered number is a positive number.");
    return 0;


Abundantcode.com coding samples                                                 
Enter a number: 7                                                     
The entered number is a positive number.

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