1. 文件乱码
1 #include<vector> 2 #include <fstream> 3 #include <iostream> 4 #include<string> 5 #include <Windows.h> 6 using namespace std; 7 8 string UTF8ToGB(const char* str); 9 int main() 10 { 11 ifstream in_file; 12 in_file.open("D:\\S\\学习\\C++\\C++Prime_5\\8\\file4\\files1.txt"); 13 auto state = in_file.is_open(); 14 if (!in_file) 15 { 16 cerr << "文件打开失败" << endl; 17 return -1; 18 } 19 string line; 20 vector<string>lines; 21 while (getline(in_file, line)) 22 { 23 line = UTF8ToGB(line.c_str()).c_str(); 24 lines.push_back(line); 25 } 26 in_file.close(); 27 for (auto p = lines.cbegin(); p != lines.cend(); p++) 28 cout << *p<<endl; 29 return 0; 30 } 31 32 //此处可以解决乱码 33 string UTF8ToGB(const char* str) 34 { 35 string result; 36 WCHAR* strSrc; 37 LPSTR szRes; 38 39 //获得临时变量的大小 40 int i = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); 41 strSrc = new WCHAR[i + 1]; 42 MultiByteToWideChar(CP_UTF8, 0, str, -1, strSrc, i); 43 44 //获得临时变量的大小 45 i = WideCharToMultiByte(CP_ACP, 0, strSrc, -1, NULL, 0, NULL, NULL); 46 szRes = new CHAR[i + 1]; 47 WideCharToMultiByte(CP_ACP, 0, strSrc, -1, szRes, i, NULL, NULL); 48 49 result = szRes; 50 delete[]strSrc; 51 delete[]szRes; 52 53 return result; 54 }