interclasarea a doi vectori

#include <iostream>

using namespace std;

int main()
{
    char caz;
    cout << "Introdu cazul:"; cin >> caz;
    switch (caz)
    {
        case 'i':
        {
            int n, m, a[100], b[100], c[200];
            cout << "n="; cin >> n;
            cout << "m="; cin >> m;
            for (int i = 0; i < n; ++i)
                cin >> a[i];
            cout << "===============";
            cout << endl;
            for (int i = 0; i < m; i++)
                cin >> b[i];
            int i = 0, j = 0, k = 0;
            while (i < n && j < m)
            {
                if (a[i] > b[j])
                {
                    c[k] = b[j];
                    j++;
                    k++;
                }
                else
                {
                    c[k] = a[i];
                    i++;
                    k++;
                }
            }
            if (i <= n)
            {
                for (int x = i; x < n; x++)
                {
                    c[k] = a[x];
                    k++;
                }
            }
            if (j <= m)
            {
                for (int y = j; y < m; y++)
                {
                    c[k] = b[y];
                    k++;
                }
            }
            for (int i = 0; i <k; i++)
                cout << c[i] << " ";
            break;
        }
    }
    system("pause");
    return 0;
}