C Program to check if a number is even or odd

C Program to check if a number is even or odd using function

C Program to check if a number is even or odd using function

#include <stdio.h>

// function declaration
int isEven(int);

void main()
{
    int num;

    printf("Enter the number: ");
    scanf("%d", &num);

    if(isEven(num))
        printf("%d is an even number", num);
    else
        printf("%d is an odd number", num);

}

// function definition
int isEven(int num)
{
    if (num % 2 == 0)
        return 1;
    return 0;
}

C Program to check if a number is even or odd using function and bitwise operator

#include <stdio.h>

// function declaration
int isEven(int);

void main()
{
    int num;

    printf("Enter the number: ");
    scanf("%d", &num);

    if(isEven(num))
        printf("%d is an even number", num);
    else
        printf("%d is an odd number", num);

}

// function definition
int isEven(int num)
{
    return !(num & 1);
}

Output

Enter the number: 9
9 is an odd number