Using While Loop to Find Even Numbers

Introduction

In this lab, you will learn how to use a while loop to find even numbers from a list of integers.

Find Even Numbers From a List Using While Loop

In this lab, you will learn how to find even numbers from a list using a while loop.

1. Create a file called even_numbers.c and open it in WebIDE.

2. Copy and paste the following code into the even_numbers.c file:

   #include <stdio.h>
   
   int main() {
     int numbers[] = { 21, 78, 62, 90, 55, 10, 85, 45, 11, 2 };
     int size = sizeof(numbers) / sizeof(numbers[0]);
     int i = 0;
   
     printf("The even numbers from the list are:\n\n");
   
     while (i < size) {
       if (numbers[i] % 2 == 0) {
         printf("EVEN: %d\n", numbers[i]);
       }
       i++;
     }
   
     return 0;
   }
   

3. Save the file.

4. Open a terminal and navigate to the directory where the even_numbers.c file is saved.

5. Compile the code using the command gcc even_numbers.c -o even_numbers.

6. Run the program by entering ./even_numbers in the terminal.

Summary

After completing this lab, you will be able to use a while loop to find even numbers from a list of integers. The program will output the even numbers from the list on the terminal.