ELTE > Web-Programozó

#include <stdio.h>

#include <stdlib.h>

#define MAX_STR 128

typedef struct _ITALGEP{

    int rekesz_id;

    char italnev[MAX_STR];

    int egysegar;

    int darab;

    char feltoltesi_datum[MAX_STR];

    int eladott_db;

    int forgalom;

    int osszes_eladott_db;

    int osszes_forgalom;

    int ures;

    int szin;

} ITALGEP;

int main(){

    ITALGEP gep;

    printf ("rekesz_id: ");

    scanf ("%d", &gep.rekesz_id);

    FILE *fw = fopen("szoveg","wb");

    while(gep.rekesz_id!=-1){

   	 printf ("italnev: ");

   	 scanf ("%s", gep.italnev);

   	 fwrite(&gep ,sizeof(gep),1,fw);

   	 printf ("rekesz_id: ");

   	 scanf ("%d", &gep.rekesz_id);

    }

    fclose(fw);

    char adat[100];

    FILE *fp = fopen("szoveg","rb");

    if(fp!=NULL){

   	 while(fgets(adat,100,fp)!=NULL){

   		 printf("Az olvasott elem: %sn", adat);

   	 }

   	 fclose(fp);

    } else {

   	 printf("Hibas fajlnev!");

    }

    return 0;

}

#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;

}