#include<stdlib.h>
#include<stdio.h>
#include<string.h>

void citirere(int m, int a[100][100])
{
    int i, j;
    for(i=0;i<m;i++)
        for (j = 0; j < m; j++)
        {
            if ((i + j) == m - 1)
                a[i][j] = 6;
            else {
                printf("a[%d][%d]= ", i, j);
                scanf("%d", &a[i][j]);
            }
        }
}

void afisare_dupa_inmultire(int m, int a[100][100])
{
    int i, j,aux;
    printf("\nDati vloarea cu care elementele mai mici ca 6 se vor inmulti: ");
    scanf("%d", &aux);
    printf("\n");
    for (i = 0; i < m; i++)
    {
        for (j = 0; j < m; j++)
        {
            if (a[i][j] < 6)
                a[i][j] = a[i][j] * aux;
            printf("%d ", a[i][j]);
        }
        printf("\n");
    }
}

void vector(int m, int a[100][100])
{
    int i,b[20];
    for (i = 0; i < m; i++)
        b[i] = a[i][m - 1];
    for (i = 0; i < m; i++)
        printf("%d ", b[i]);
    printf("\n");
}

int main()
{
    int a[100][100], m;
    printf("m= ");
    scanf("%d", &m);
    enum { iesire, citire, ordonare, afisare}opt;
    do {
        printf("0. Iesire\n");
        printf("1. Citire elemente\n");
        printf("2. Afisare dupa inmultire\n");
        printf("3. Copiere+afisare vector\n");
        printf("opt= ");
        scanf("%d", &opt);
        switch (opt)
        {
        case iesire:exit(0);
            break;
        case citire:citirere(m, a);
            break;
        case ordonare:afisare_dupa_inmultire(m, a);
            break;
        case afisare:vector(m, a);
            break;
        default:printf("Optiune nevalida!\n");
            break;
        }
    } while (1);
    system("pause");
    return 0;
}