while ((de = readdir(dr)) != NULL)
            printf("%s\n", de->d_name);
........................................................
char *buf;
buf=(char *)malloc(100*sizeof(char));
getcwd(buf,100);
printf("\n %s \n",buf);
.....................
#include <stdio.h>
#include <stdlib.h>

int main()
{
    pid_t childPID = fork();

    if(childPID >0){
    printf("Hello world!\n");

    }
    else if(childPID ==0)
    {
        printf("Salomaaaaa i am the child");
    }
    else {
        printf("An error occured!!");
        exit(-1);
    }
    return 0;
}
.........................
#include<stdio.h>
#include<stdlib.h>
#define _GNU_SOURCE
#include<string.h>
#include<unistd.h>

void checkCommand( char* InputSepCommandTokens[] , int commandWithArgsFlag){
    if(commandWithArgsFlag==1)
   printf("You typed an argumantative command  %s" , InputSepCommandTokens[0]);
   else
    printf("NO ARGUMENTS");

}

int main()
{
    int commandWithArgsFlag = 0;
    char *InputCommand[10];
    char *InputSepCommandTokens[10];
    printf("Enter command Line: ");
    fgets(&InputCommand, 100, stdin);

    printf("Entered command line is:%s \n", InputCommand);
    char space[] = " ";
    char *parsedInputCommand =strtok(&InputCommand,space);
    //char* firstToken = parsedInputCommand;
    //printf("first token is:%s \n", firstToken);
    int count=0;
    InputSepCommandTokens[0] =parsedInputCommand;
    while( (parsedInputCommand) !=  NULL){
        printf("hi:%s \n", parsedInputCommand);
        parsedInputCommand = strtok( NULL, space );
        count++;
        InputSepCommandTokens[count] = parsedInputCommand;
    }

    //printf("\n Count is: %d \n\n ........ \n" , count);
    if(count >1) commandWithArgsFlag=1;

    int i;
    for(i=0 ; i<count ;i++){
        printf("%d token is:%s \n" , (i+1) , InputSepCommandTokens[i]);
    }

   // printf(" you just wrote:%s \n"  , InputSepCommandTokens[0]);
    char * exitCheck[1] = {"exit"};


   // printf("ExitCheck is: %s\n...........\n" , exitCheck[0]);
   // printf("InputSepCommandTokens[0] is: %s\n...........\n" , InputSepCommandTokens[0]);


   if(strncmp( InputSepCommandTokens[0], exitCheck[0] , 4) == 0 ) {
       printf("\n...............PROGRAM HAS TERMINATED...................");
       abort();
   }

   else
        checkCommand(InputSepCommandTokens , commandWithArgsFlag);
    //exit(0);
//better make this a while
    return 0;
}