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

void ciiteetr(int *m, int *M[100][100])
{
    int i, j;
    for(i=0;i<*m;i++)
    for (j = 0; j < *m; j++)
    {
        if (i == j)
            M[i][j] = 4;
        else
            scanf("%d", &M[i][j]);
    }
}

int prim(int a)
{
    int d, k = 1;
    for (d = 2; d <= a / 2; d++)
    {
        if (a%d == 0)
        {
            k = 0;
            break;
        }
    }
    return k;
}

void afisareeee(int*m, int M[100][100])
{
    printf("Dati elementul pulii: ");
    int i, j,o;
    scanf("%d", &o);
    printf("Inainte\n\n");
    for (i = 0; i < *m; i++)
    {
        for (j = 0; j < *m; j++)
            printf("%d ", M[i][j]);
        printf("\n");
    }
    printf("\n\nDupa\n\n");
    for (i = 0; i < *m; i++)
    {
        for (j = 0; j < *m; j++)
        {
            if (prim(M[i][j]) == 1)
                M[i][j] = M[i][j] * o;
        printf("%d ", M[i][j]);
        }
        printf("\n");
    }
    printf("\n");
}

int main()
{
    int m, M[100][100];
    printf("m= ");
    scanf("%d", &m);
    enum{iesire, citire, afisare, copiere}opt;
    do {
        printf("0.Iesire\n");
        printf("1.Citire\n");
        printf("2.Afisare\n");
        printf("3.Copiere\n");
        printf("opt= ");
        scanf("%d", &opt);
        switch (opt)
        {
        case iesire:exit(0);
            break;
        case citire:ciiteetr(&m, M);
            break;
        case afisare:afisareeee(&m, M);
            break;
        case copiere:
            break;
        default:
            break;
        }
    } while (1);
}