C++读txt
先上代码
1 #include <iostream> 2 #include <fstream> 3 #include <cassert> 4 #include <string> 5 #include <vector> 6 7 using namespace std; 8 9 vector<string> split(string str) 10 { 11 12 vector<string> result; 13 string temp(""); 14 15 for (size_t i = 0; i < str.size(); i++) 16 { 17 if (str[i] == '$' ) 18 { 19 result.push_back(temp); 20 temp = ""; 21 } 22 else 23 { 24 temp += str[i]; 25 } 26 } 27 return result; 28 } 29 30 31 //1 逐行读取 32 void readTxt(string file) 33 { 34 ifstream infile; 35 infile.open(file.data()); //将文件流对象与文件连接起来 36 assert(infile.is_open()); //若失败,则输出错误消息,并终止程序运行 37 38 string s; 39 while (getline(infile, s)) 40 { 41 cout << s << endl; 42 vector<string> result = split(s); 43 for (size_t i = 0; i < result.size(); i++) 44 { 45 cout << result[i] << " "; 46 } 47 cout << endl; 48 } 49 infile.close(); //关闭文件输入流 50 } 51 52 53 int main() 54 { 55 readTxt("merge.txt"); 56 system("pause"); 57 return 0; 58 }
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