s_重载匹配

重载是编译器自动匹配最佳的，和重载函数位置无关

#include"iostream"#include"string"using namespace std;void test(int i){cout<<"int"<<endl;}void test(string s){cout<<"string"<<endl;}void main(){char ch='a';test(ch);}

这样打印是int

#include"iostream"#include"string"using namespace std;void test(string s){cout<<"string"<<endl;}void test(int i){cout<<"int"<<endl;}void main(){char ch='a';test(ch);}

换顺序后打印的也是int

匹配是由编译器决定，和顺序无关