In this blog post, we will see, how to write a C Program to Print Even Numbers from 1 to N using a while and for a loop. We will also see how we can print even numbers from 1 to N without using a branching statement ( if-else statement).

C Program to Print Even Numbers from 1 to 100 using While Loop:

Below mentioned program is used to print even numbers from 1 to N using the while loop. The value of N is asked by users with the help of a scanf (input) function.

#include<stdio.h>

int main()
{
    int i = 2, number;

    printf("\n Please Enter the Maximum Limit Value : ");
    scanf("%d", &number);

    printf("\n Even Numbers between 1 and %d are : \n", number);
    while(i <= number)
    {
        printf(" %d\t", i);
        i = i+2;
    }

    return 0;
}

Output:

Please Enter the Maximum Limit Value: 10

Even Numbers between 1 and 10 are :
2 4 6 8 10

C Program to Print Even Numbers from 1 to 100 using for Loop:

Below mentioned program is used to print even numbers from 1 to N using the for a loop. The value of N is asked by users with the help of a scanf (input) function.

#include<stdio.h>

int main()
{
    int i, number;

    printf("Please Enter the Maximum Limit Value : ");
    scanf("%d", &number);

    printf("Even Numbers between 1 and %d are : \n", number);
    for(i = 1; i <= number; i++)
    {
        if ( i % 2 == 0 )
        {
            printf(" %d\t", i);
        }
    }

    return 0;
}

Output:

Please Enter the Maximum Limit Value: 10

Even Numbers between 1 and 10 are :
2 4 6 8 10

C Program to Print Even Numbers from 1 to N without If Statement

#include<stdio.h>

int main()
{
    int i, number;

    printf("\n Please Enter the Maximum Limit Value : ");
    scanf("%d", &number);

    printf("\n Even Numbers between 1 and %d are : \n", number);
    for(i = 2; i <= number; i= i+2)
    {
        printf(" %d\t", i);
    }

    return 0;
}

C Program to Print Even Numbers in a Given Range

Below mentioned C program allows the user to enter Minimum and maximum value. After that like the above-mentioned program, this C program will print even numbers in a given range.

#include<stdio.h>

int main()
{
    int i, min, max;

    printf("\n Please Enter the min Limit Value :  ");
    scanf("%d", &min);

    printf("\n Please Enter the max Limit Values :  ");
    scanf("%d", &max);

    if ( min % 2 != 0 )
    {
        min++;
    }

    printf("\n Even Numbers between %d and %d are : \n", min, max);
    for(i = min; i <= max; i= i+2)
    {
        printf(" %d\t", i);
    }

    return 0;
}

Output:

Please Enter the min Limit Value: 5
Please Enter the max Limit Values: 10

Even Numbers between 6 and 10 are :
6 8 10