下⾯程序的输出为（ ）。
#include <iostream>
using namespace std;
int a[10][10];
int main() {
int m = 5, n = 4;
for (int x = 0; x <= m; x++)
a[x][0] = 1;
for (int y = 1; y <= n; y++)
a[0][y] = 1;
for (int x = 1; x <= m; x++)
for (int y = 1; y <= n; y++)
a[x][y] = a[x - 1][y] + a[x][y - 1];
cout << a[m][n] << endl;
return 0;
}
- A.
4 - B.
5 - C.
126 - D.
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