F.46: int is the return type for main()
F.46:main函数的返回值类型是整数
Reason(原因)
It's a language rule, but violated through "language extensions" so often that it is worth mentioning. Declaring main (the one global main of a program) void limits portability.
这是语言本身的准则,但是由于通过“语言扩展”的方式违反该准则的情况非常常见,因此有必要提醒。将main函数(程序唯一的全局main函数)定义为void会限制移植性。
Example(示例)
void main() { /* ... */ }; // bad, not C++int main(){std::cout << "This is the way to do it\n";}
Note(注意)
We mention this only because of the persistence of this error in the community.
我们提醒这一点只是因为在社区中存在对这个错误的坚持。
Enforcement(实施建议)
The compiler should do it
编译器会检查。
If the compiler doesn't do it, let tools flag it
如果编译器不检查,让工具检查。
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