Bubble Sort using Fork System Call in linux

BubbleSort.c

#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
        pid_t pid, p;
        int n, *num, i, j, temp;
        pid = getpid();
        printf("Parent process executing\n");
        printf("Enter the length of the array: ");
        scanf("%d",&n);
        num = (int*)malloc(sizeof(int)*n);
        printf("Enter the array:\n");
        for(i = 0 ; i < n ; i++)
                scanf("%d",&num[i]);
        p = fork();
        if(p == 0 )
        {
                printf("Child process exucuting\n");
                for(i = 0 ; i < n ; i++ )
                {
                        for(j = 0 ; j < n-i-1 ; j++)
                        {
                                if(num[j] > num[j+1])
                                {
                                        temp = num[j];
                                        num[j] = num[j+1];
                                        num[j+1] = temp;
                                }
                        }
                }
                printf("The sorted array is:\n");
                for(i = 0 ; i < n ; i++)
                {
                        printf("%d ",num[i]);
                }
                printf("\n");
        }
return 0;
}

OUTPUT:-
tanay@tanay-Inspiron-545:$ gcc -Wall -o bubble bubble.c
tanay@tanay-Inspiron-545:$ ./bubble
Parent process executing
Enter the length of the array: 5
Enter the array:
5 3 4 1 2
Child process exucuting
The sorted array is:
1 2 3 4 5