2016august sub2 pr5

#include<iostream>
#include<string>
using namespace std;
void citire(int &n, int &m, int a[][50])
{
    do
    {
        cout << "n="; cin >> n;
        cout << "m="; cin >> m;
    } while (n < 3 || n>100);
    cout << "dati elementele matricei:";
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            cin >> a[i][j];
}
bool exista(int a[][50], int n, int m,int x)
{
    int i = 0;
    for (int j = 0; j < m; j++)
        if (a[i][j] == x)
            return true;
    int j = n - 1;
    for (int i = 0; i < n; i++)
        if (a[i][j] == x)
            return true;
    i = n - 1;
    for (int j = 0; j < m; j++)
        if (a[i][j] == x)
            return true;
    j = 0;
    for (int i = 0; i < n; i++)
        if (a[i][j] == x)
            return true;
    return false;


}
int main()
{
    int a[50][50], n, m, x;
    citire(n, m, a);
    cout << "x="; cin >> x;
    if (exista(a, n, m, x))
        cout << "da";
    else
        cout << "nu";
    cout << endl << endl;
    system("pause");
    return 0;
}