c++ - 为什么会出现 invalid operands 的问题？

Question

代码运行的时候出现了 invalid operands of types 'int (int, int)' and 'int' to binary 'operator<< ' 的错误。
代码如下：

//把M个同样的苹果放在N个同样的盘子里，允许有盘子空着，一共有几种放法？
#include <iostream>

using namespace std;

int count(int m, int n)
{
    if (m <=1 || n <=0) return 1;
    if (m < n)
        return count(m, m);
    else
        return count(m, n-1)+count(m-n, n);
}

void prime()
{
    int apples, plates;
    cin >> apples >> plates;
    count << count(apples, plates);
}

在count<< count(apples, plates)，即倒数第二行处提示错误，为什么会出现这种类型的错误呢？

Answer 1

cout << count(apples, plates);

Answer 2

count << count(apples, plates);
The left side is the function<<The right side is the int type

Is this possible?

Answer 3

First tell me the reason why you use it this way

Answer 4

Sorry, I changed cout to count