### Sample C Program With Algorithm To Implement Bubble Sort Using Pointers.

ALGOTITHM

STEP 1: Start the program.
STEP 2: Read the value of n.
STEP 3: Set for loop to read the elements of array for( i = 0; i < n; i++ ).
STEP 4: Call the function bubblesort ( a , n ).
STEP 5: Print the sorted array a.
STEP 6: Stop the program.

FUNCTION BUBBBLESORT ( int *b [], int n )

STEP 1: Declare the local variable.
STEP 2: Set a for loop for( i = 0; i < n; i++ )
STEP 3: Nest another for loop for( j = 1; j < n; j++ )
STEP 4: Check the condition b[i] > b[j]
STEP 5: If so swap the two values using temporary y variable t as
t = a[i]
b[i] = b[j]
b[j] = t
STEP 6: Else go back to step3.

SAMPLE PROGRAM:

#include<stdio.h>
#include<conio.h>

void bubblesort( int *[], int);

void main()
{

int i, n, a[100];
clrscr();

printf( " \n Enter the number of elements: " );
scanf( " %d ", &n );

printf( " \n Enter the array elements " );
for( i = 0; i < n; i++)
scanf( " %d ", &a[i] );

printf( " \n UNSORTED ARRAY ELEMENTS " );

for(i = 0; i < n; i++ )
printf( " \t %d ", a[i] );

bubblesort( a, n );
printf( " \n SORTED ARRAY ");

for( i = 0; i < n; i++)
printf( " \t %d ", *(a + i) );

getch();

}

void bubblesort(int* b[],int n)
{

int i, j, t;
for( i = 0; i < n; i++ )
{
for( j = i + 1; j < n; j++ )
{
if( b[i] > b[j] )
{
t = b[i];
b[i] = b[j];
b[j] = t;
}
}
}
}

OUTPUT:

Enter the number of elements: 6
Enter the array elements 34
32
12
456
43
56
UNSORTED ARRAY ELEMENTS 34 32 12 456 43 56
SORTED ARRAY 12 32 34 43 56 456

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1. Nicely explained. Remove clrscr() as it does not work in most of the compilers. Dev C++, gcc compiler( in linux ) etc.
Please see this : Selection sort program in c

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### Sample C Program To Print Welcome Message.

#include <stdio.h>

int main()
{

printf( "Welcome to C Programming World. \n" );
getchar();
return 0;

}

OUTPUT:

Welcome to C Programming World.

Sample C Program To Accept & Display A Number.
#include <stdio.h>
#include <conio.h>

main()
{

int number;
printf("Enter an integer ");
scanf("%d", &number);
printf("Integer that you have entered is %d",number);
getch();
return 0;

}

OUTPUT:

Enter an integer 9
Integer you have entered is 9