C Program to check if a number is even or odd in a given interval

C Program to check if a number is even or odd in a given interval

C Program to check if a number is even or odd in a given interval

#include <stdio.h>

// function declaration
int isEven(int);

void main()
{
    int start, end, num;

    printf("Enter the number to start: ");
    scanf("%d", &start);
    printf("Enter the number to end: ");
    scanf("%d", &end);

    printf("\nEven numbers-\n");
    for (num = start; num <= end; num++)
    {
        if (isEven(num))
            printf("%d\n", num);
    }

    printf("\nOdd numbers-\n");
    for (num = start; num <= end; num++)
    {
        if (!isEven(num))
            printf("%d\n", num);
    }
}

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

Output

Enter the number to start: 1
Enter the number to end: 10

Even numbers-
2
4
6
8
10

Odd numbers-
1
3
5
7
9