CODECARTA

/* C program to do the following: Using fork() create a childprocess. The child process prints it's own process-id and id of it's parent and then exits. The parent process waits for it's child to finish(by executing the wait()) and prints it's own process-id and the id of it's child process and then exits*/
#include<stdio.h>
#include<string.h>
int main()
{
    char i[10];
    int n,status=0;
    for(;;)
    {
    printf(">");
    gets(i);
    n=fork();
   
    if(n==0)
    {
        printf("my process  id =%d\n",getpid());
        printf("my parent process id=%d\n",getppid());
        exit(0);   
    }
    else if(n>0)
    {
        while(waitpid(n,status,0)<0)
        {   
           
            break;
        }
        printf("the child process=%d\n",n);
        printf("my id is=%d\n",getpid());
    }
    else
    {
        printf("error\n");
    }
    }
    return (0);
}