返回功能而不是“0”或“变量”

Question

This is a theoretical question. To understand further how a return statement at the end of a function can be manipulated.

Can we do like this:

int intialize1()
{
    ...do smth;
    ...do smth;

    return initialize2();
}

in other c file

int initialize2()
{
   ...do other thing;
   ...do other thing;

   return 0;
}

Is this a proper way to do like this?

Answer 1

What you wrote is completely correct, frequently done, and functionally equivalent to:

int initialize1()
{
    ...do smth;
    ...do smth;

    int x_value;              // Create a place to store the return value
    x_value = initialize2();  // Get the result of the function, and store it.
    return x_value;           // Return the stored value.
}

Answer 2

从return语句调用函数是完全合法的，但是你必须确保两个函数的返回类型是一致的，并且没有数据截断或语义错误的隐式转换