摘要： 1 #include "stdafx.h" 2 #include <string> 3 #include <iostream> 4 using namespace std; 5 int _tmain(int argc, _TCHAR* argv[]) 6 { 7 string s="352225198807081013.10086.777.505"; 8 int pos = s.find_last_of(".");//string查找操作 9 string s1 = s.substr(pos+1,3);//截取 阅读全文

摘要： ifstream由istream派生而来，从文件中读取；ofstream由ostream派生而来，写到文件中去；fstream由iostream派生而来，读写文件；IO 1 #include "stdafx.h" 2 #include <fstream> 3 #include <iostream> 4 #include <string> 5 using namespace std; 6 int _tmain(int argc, _TCHAR* argv[]) 7 { 8 ifstream infile; 9 ofstream outfil 阅读全文