C Program to Sort Array in Ascending Order

How to write a C Program to Sort Array in Ascending Order using For Loop, and Functions with an example.

C Program to Sort Array in Ascending Order using for loop

This program for sorting arrays allows the user to enter the Size and the row elements of One Dimensional. Next, in this C program, we are using Nested For Loop to sort the array elements in ascending order and print all the elements in it.

#include <stdio.h>

int main()
{
	int Array[50], i, j, temp, Size;
	
	printf("\nPlease Enter the Number of elements in an array  :  ");
	scanf("%d", &Size);
	
	printf("\nPlease Enter %d elements of an Array \n", Size);
	for (i = 0; i < Size; i++)
	{
		scanf("%d", &Array[i]);
    }     
	for (i = 0; i < Size; i++)
	{
		for (j = i + 1; j < Size; j++)
		{
			if(Array[i] > Array[j])
			{
				temp = Array[i];
				Array[i] = Array[j];
				Array[j] = temp;
			}
			
		}
	}
	printf("\n **** Array of Elemenst in Ascending Order are : ****\n");
	for (i = 0; i < Size; i++)
	{
		printf("%d\t", Array[i]);
	}
	
	return 0;
}

In this C C Program to Sort Array in Ascending Order, For Loop will make sure that the number is between 0 and the maximum size value. In this example, it will be from 0 to 3

Let me show you the Nested For Loop inside the program Iteration wise.

First For Loop – First Iteration: for(i = 0; 0 < 4; 0++)
The condition is True, so it will enter into the second for loop

Second For Loop – First Iteration: for(j = 0 + 1; 1 < 4; 1++)
Condition inside the For Loop is True, so the compiler will enter into the If Statement
if(19 > 25)
It means the Condition is False, so it will exit from the If block, and the j value will be incremented by 1.

Second For Loop – Second Iteration: for(j = 2; 2 < 4; 2++)

Condition inside the For Loop is True. So, the C Programming compiler will enter into the If Statement

if(19 > 4) – It means, the Condition is True
temp = 19
Array[i] = 4
Array[j] = 19

Now the Array will be 4 25 19 21. Next, j will increment by 1.

Third Iteration of C Program to Sort Array in Ascending Order: for(j = 3; 3 < 4; 3++)
Condition inside the For Loop is True so, the compiler will enter into the If Statement: if(Array[0] > Array[3])

if(4 > 21) – It means Condition is False. So, it will exit from the If block, and the j value will increment by 1.

Fourth Iteration: for(j = 4; 4 < 4; 4++)
The condition inside it is False. So, the compiler will exit from the For Loop. Next, i value incremented by 1.

First For Loop – Second Iteration: for(i = 1; 1 < 4; 1++)
The condition is True so, it will enter into the second for loop

Second For Loop – First Iteration: for(j = 1 + 1; 2 < 4; 2++)
Condition inside it is True so the compiler will enter into the If Statement:
if(25 > 19) – It means, the Condition is True
temp = 25
[i] = 19
[j] = 25
Now the array will be  4 19 25 21. Next, j will increment by 1.

Second For Loop – Second Iteration: for(j = 3; 3 < 4; 3++)
The condition inside it is True so, the compiler will enter into the If Statement: if(Array[1] > Array[3])

if(19 > 21) – It means, the Condition is False so, it will exit from the If block and the Second For Loop.

Do the same for the remaining Iterations of the program for the sorting array.

C Program to Sort Array in Ascending Order using Functions

This program for sorting arrays is the same as the first example. However, we separated the logic to sort elements in ascending order using Functions.

#include <stdio.h>

int *Sort_ArrayAsc(int arr[], int Size);

int main()
{
	int Array[50], i, j, Size;
	int *arr;
	
	printf("\nPlease Enter the Number of elements  :  ");
	scanf("%d", &Size);
	
	printf("\nPlease Enter %d elements \n", Size);
	for (i = 0; i < Size; i++)
	{
		scanf("%d", &Array[i]);
    }  
	
	arr = Sort_ArrayAsc(Array, Size);   

	printf("\n **** Array of Elements in Ascending Order are : ****\n");
	for (i = 0; i < Size; i++)
	{
		printf("%d \n", i, arr[i]);
	}	
	return 0;
}

int *Sort_ArrayAsc(int arr[], int Size)
{
	int i, j, temp;
	
	for (i = 0; i < Size; i++)
	{
		for (j = i + 1; j < Size; j++)
		{
			if(arr[i] > arr[j])
			{
				temp = arr[i];
				arr[i] = arr[j];
				arr[j] = temp;
			}			
		}
	}
	return arr;	
}

Please Enter the Number of elements  :  5

Please Enter 5 elements
25 89 4 12 15

 **** Array of Elements in Ascending Order are : ****
4 
12 
15 
25 
89