Unos matrice, ispis, najmanji red, najveci, zamjena

#include <iostream>
#include <climits>
#include <iomanip>
#include <cmath>
using namespace std;


const int max = 5;

void unos(int[][max]);
int min_red(int[][max]);
int max_red(int[][max]);
void zamjeni(int[][max], int, int);
void ispis(int[][max]);

int main()
{

    int matrica[max][max];
    unos(matrica);
    int najmanji_red = min_red(matrica), najveci_red = max_red(matrica);

    ispis(matrica);

    zamjeni(matrica, najmanji_red, najveci_red);

    ispis(matrica);

    system("pause >null");
    return 0;
}
void unos(int m[][max])
{
    cout << "unesi vrijednosti matrice: " << "\n===================================\n";
    for (int i = 0; i < max; i++)
    {
        for (int j = 0; j < max; j++)
        {
            cout << i + 1 << " " << j + 1 << " --> ";
            cin >> m[i][j];
        }
        cout << endl;
    }
}
int min_red(int m[][max])
{
    int x = INT_MAX, red;
    for (int i = 0; i < max; i++)
    {
        for (int j = 0; j < max; j++)
        {
            if (m[i][j]<x)
            {
                x = m[i][j];
                red = i;
            }
        }
    }
    return red;
}
int max_red(int m[][max])
{
    int x = INT_MIN, red;
    for (int i = 0; i < max; i++)
    {
        for (int j = 0; j < max; j++)
        {
            if (m[i][j]>x)
            {
                x = m[i][j];
                red = i;
            }
        }
    }
    return red;
}
void zamjeni(int m[][max], int mini, int maxi)
{
    for (int i = 0; i < max; i++)
    {
        int pom_var = m[mini][i];
        m[mini][i] = m[maxi][i];
        m[maxi][i] = pom_var;
    }
}
void ispis(int m[][max])
{
    for (int i = 0; i < max; i++)
    {
        for (int j = 0; j < max; j++)
        {
            cout << setw(3) << m[i][j];
        }
        cout << endl;
    }
    cout << endl;
}