string子串(12)

 1 #include <iostream>
 2 #include <string>
 3 using namespace std;
 4 
 5 void test_01()
 6 {
 7     string email = "shuaige@sina.com";
 8     string usrname;
 9     int pos = email.find("@");
10     usrname = email.substr(0, pos);
11     cout << usrname << endl;
12 }
13 
14 int main(void)
15 {
16     test_01();
17 
18     system("pause");
19     return 0;
20 
21 }