C Exercises: Sort the elements of an array

Last update on December 20 2024 13:09:49 (UTC/GMT +8 hours)

Write a C program to sort the elements of an array.

Sample Solution:

C Code:

#include<stdio.h>     // Include the standard input/output header file.
#include<stdlib.h>    // Include the standard library header file.

// Comparator function used for qsort.
int comparetor (const void * x, const void * y)
{
return ( *(int*)x - *(int*)y );
}

int main ()           // Start of the main function.
{
int my_array[100];   // Declare an integer array 'my_array' with a maximum size of 100.
int n,i;             // Declare integer variables 'n' and 'i'.

printf("\nInput the number of elements to be stored in the array :");   // Prompt the user to input the number of elements.
scanf("%d",&n);   // Read the user's input and store it in 'n'.

printf("Input %d elements in the array :\n",n+1);   // Prompt the user to input the elements of the array.
for(i=0;i<n;i++)   // Start of a for loop to iterate over the elements of the array.
    {
printf("element - %d : ",i);   // Prompt the user for the value of the current element.
scanf("%d",&my_array[i]);     // Read the user's input and store it in the current element of 'my_array'.
    }

qsort (my_array, n, sizeof(int), comparetor );   // Sort the array 'my_array' using the qsort function and the 'comparetor' function.

printf("\nAfter sorting the array are :\n");   // Print a message indicating that the array has been sorted.
for (i=0; i<n; i++)   // Start of a for loop to iterate over the sorted elements of the array.
printf ("%d \n",my_array[i]);   // Print the current element of the sorted array.

return 0;   // Return 0 to indicate successful execution of the program.
}   // End of the main function.

Sample Output:

Input the number of elements to be stored in the array :5                                                     
Input 6 elements in the array :                                                                               
element - 0 : 2                                                                                               
element - 1 : 4                                                                                               
element - 2 : 3                                                                                               
element - 3 : 1                                                                                               
element - 4 : 5                                                                                               
                                                                                                              
After sorting the array are :                                                                                 
1                                                                                                             
2                                                                                                             
3                                                                                                             
4                                                                                                             
5

Flowchart:

C Programming Code Editor:

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