ELTE > Web-Programozó > 2. félév

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include <time.h>

void kiir(int n, int *a);

int main(){

	int * input;

//	int i;

	int i = 1;

	int ertek;

	int j;

	srand(time(NULL));

	int x = sizeof(int);

	int y = sizeof(int);

	input = (int *) malloc(x);

	for(j = 0; j < i; j++){

		printf("Kerem az erteket: ");

		scanf(" %d", &ertek);

		if(ertek>0){

			input = realloc(input, y);

//			input[j] = rand() % 100;

			input[j] = ertek;

			y = y + x;

			i++;

		}

	}

	kiir(i, input);

	return 0;

}

void kiir(int n, int *a){

	int i;

	for(i = 0; i < n; i++){

		printf("Az %d. elem: %dn", i , a[i]);

	}

}

#include <stdio.h>

#include <stdlib.h>

#include <errno.h> // hibakezel괨ez

#include <dirent.h>

#include <sys/types.h>

#include <string.h>

#include <sys/stat.h>

void konyvtar(char form[], char di[]){

	DIR * D;

	struct dirent * direntp;

	struct stat my_status;

	char new_form[80];

	char new_form_s[80];

	char fname[80];

	strcpy(new_form, form);

	strcat(new_form, "t ");

	strcpy(new_form_s, form);

	strcat(new_form_s, "%sn");

	chdir(di);

	D = opendir(".");

	if(!errno){

		// könyvtár nyitva, olvassuk

		while((direntp=readdir(D))!=NULL){

			strcpy(fname, direntp -> d_name);

			printf(new_form_s, fname);

			if((strcmp(fname, ".")!=0) && (strcmp(fname, "..")!=0)){

				stat(fname, &my_status);

				if(S_ISDIR(my_status.st_mode)){

					strcat(new_form, "t");

					konyvtar(new_form, fname);

				}

			}

		}

	}

	closedir(D);

}

int main(){

	char D[80] = ".";

	printf("Az aktualis konyvtar tartalma: n");

	konyvtar(" ", D);

	return 0;

}

#include <stdio.h>

#include <string.h>

#include <sys/types.h>

#define MAX_COUNT 200

#define BUF_SIZE 100

void main(void){

    pid_t pid;

    int i;

    char buf[BUF_SIZE];

    fork();

    pid = getpid();

    for(i=1; i <= MAX_COUNT; i++){

   	 sprintf(buf, "This line is from pid %D, value = %dn", pid, i);

   	 write(1, buf, strlen(buf));

    }

}