trrt

#include <stdio.h>
#include <stdlib.h>
#include<math.h>
#include<conio.h>


float** Alocare(int n, int m) {
    int i;
    float** tab = (float**)malloc(sizeof(float*) * n);
    for (i = 0; i < n; i++)
        tab[i] = (float*)malloc(sizeof(float) * m);
    return tab;
}

void Introducere_tast(float** tab, int n, int m)
{
    int i;
    int j;
    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            printf("Introduceti valoarea de pe pozitia [%d][%d]: ", i, j);
            scanf_s("%f", &tab[i][j]);
        }
    }
}
void Introducere_rand(float** tab, int n, int m)
{
    int i;
    int j;
    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            tab[i][j] = rand();
        }
    }
}

void Afisare(float** tab, int n, int m)
{
    int i = 0;
    int j = 0;

    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            printf("%f ", tab[i][j]);
        }
        printf("\n");
    }
}

void Eliberarea_memoriei(float** tab, int n)
{

    int i = 0;

    for(i = 0; i < n; i++)
        free(tab[i]);
    free(tab);
}
void schimb(float* a, float* b)
{

    float aux;
    aux = *a;
    *a = *b;
    *b = aux;

}
float** Sortare(float** tab, int n, int m)
{

    int i;
    int j;
    int k;
    int p;
    i = 0;
    while (i < n)
    {

        j = 0;
        while (j < m)
        {
            k = j;
            p = k;
            while (++p < m)
            {
                if (tab[k][j] > tab[p][j]) { k = p; }
            }
            schimb(&tab[k][j], &tab[i][j]);
            j = j + 2;
        }
        i = i + 1;
    }
    return(tab);
}
void menu()
{
    printf("-------------------------------Menu------------------------\n");
    printf("[1] - Alocarea tabloului de n linii si m coloane\n");
    printf("[2] - Introducerea datelor de la tastatura\n");
    printf("[3] - Introducerea unor date random in tablou\n");
    printf("[4] - Sortarea tabloului\n");
    printf("[5] - Afisarea tabloului\n");
    printf("[6] - Eliberarea memoriei\n");
    printf("[0] - Iesire din program\n");
    printf("-------------------------------------------------------------\n");
}

int main()
{

    int      q;
    int      n;
    int      m;
    float** tab = 0;

    while (1)
    {
        menu();
        printf("Alegeti setarea :");
        scanf_s("%d", &q);
        switch (q)
        {
        case(1):
            printf("Ce marime  va avea tabloul?:\n");
            scanf_s("%d %d", &n, &m);
            tab = Alocare(n, m);
            break;
        case(2):
            Introducere_tast(tab, n, m);
            break;
        case(3):
            Introducere_rand(tab, n, m);
            break;
        case(4):
            Sortare(tab, n, m);
            break;
        case(5):
            Afisare(tab, n, m);
            break;
        case(6):
            Eliberarea_memoriei(tab, n);
            break;
        case(0):
            printf("Ati iesit cu succes din program\n");
            return(0);
            break;
        default:
            break;
        }
    }
    return(0);
}