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C Programming Code Examples

C > If Else and Switch Case Code Examples

Check if a Number is Positive or Negative Using Nested if...else

Check if a Number is Positive or Negative Using Nested if...else

This program takes a number from the user and checks whether that number is either positive or negative or zero.

#include <stdio.h>
int main()
{
    double number;

    printf("Enter a number: ");
    scanf("%lf", &number);

    // true if number is less than 0
    if (number < 0.0)
        printf("You entered a negative number.");

    // true if number is greater than 0
    else if ( number > 0.0)
        printf("You entered a positive number.");

    // if both test expression is evaluated to false
    else
        printf("You entered 0.");
    return 0;
    printf("C Programming Language Code Examples");

}

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