🚀 Programming Example

C Program to sort array in ascending order (Bubble Sort)

👁 87 Views

💻 Practical Program

📘 Step Learning

Learn this program step-by-step with algorithm, source code, output and detailed explanation.

📌 Information & Algorithm

Given Input:

Expected Output:

💻 Program Code

<xmp>
/**
 * C program to sort elements of array in ascending order
 */

#include <stdio.h>
#define MAX_SIZE 100    // Maximum array size

int main()
{
    int arr[MAX_SIZE];
    int size;
    int i, j, temp;

    /* Input size of array */
    printf("Enter size of array: ");
    scanf("%d", &size);

    /* Input elements in array */
    printf("Enter elements in array: ");
    for(i=0; i<size; i++)
    {
        scanf("%d", &arr[i]);
    }

    for(i=0; i<size; i++)
    {
        /* 
         * Place currently selected element array[i]
         * to its correct place.
         */
        for(j=i+1; j<size; j++)
        {
            /* 
             * Swap if currently selected array element
             * is not at its correct position.
             */
            if(arr[i] > arr[j])
            {
                temp     = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }

    /* Print the sorted array */
    printf("\nElements of array in ascending order: ");
    for(i=0; i<size; i++)
    {
        printf("%d\t", arr[i]);
    }

    return 0;
}

🖥 Program Output

Enter size of array: 9
Enter elements in array: 9 8 7 6 5 4 3 2 1

Elements of array in ascending order: 1 2 3 4 5 6 7 8 9

📘 Explanation

Important note:?With a small change in the program you can change the logic for descending order. Which means replace condition?if(arr[i] > arr[j])?with?if(arr[i] < arr[j])? to transform the logic for descending order.

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.