c++ - 跨不同功能使用 Goto 功能

Question

如何在不同的函数中使用 goto？例如:

int main() {
    // ....
    REACH:
    // ....
}
    
void function() {
    goto REACH;
}

Answer 1

你不能在标准 C++ 中。 C++ 语言标准 $6.6.4/1 起

The goto statement unconditionally transfers control to the statement labeled by the identifier. The identifier shall be a label (6.1) located in the current function.

...或在标准 C 中。从 C 语言标准的 $6.8.6.1/1 起

The identifier in a goto statement shall name a label located somewhere in the enclosing function. A goto statement shall not jump from outside the scope of an identifier having a variably modified type to inside the scope of that identifier.