C Program to Check Whether a Number is Positive or Negative

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In this program, we have to take an integer as input from the user using scanf() function and store it in a variable. Then compare the number with 0.

If num>0 : Number is Positive

If num<0 : Number is Negative

Else: Number is Zero

Using if else condition

#include <stdio.h>
void main(){
    int num;
    printf("Enter a num: ");
    scanf("%d", &num);
    if (num > 0){
        printf("Number is positive");
    }
    else if (num < 0){
        printf("Number is negative");
    }
    else{
        printf("Number is Zero");
    }
}

Using Ternary Operator

#include <stdio.h>
void main(){
    int num;
    printf("Enter a num: ");
    scanf("%d", &num);
    num > 0 ?
            printf("Number is positive") :
                num < 0 ?
                    printf("Number is Negative") :
                            printf("Number is Zero");
}

Output

Enter a num: 55
Number is positive