program to know whether the given number is even or odd

 #include <stdio.h>

int main() {

    int a;

    printf("Enter an number to check even or odd:-\n ");

    scanf("%d", &a);

    if(a % 2 == 0)

        printf("%d is even.", a);

    else

        printf("%d is odd.", a);

    return 0;

}