C++에서 전체 ASCII 파일을 std::string으로 읽는 간단한 방법입니다. −
알고리즘
Begin Declare a file a.txt using file object f of ifstream type to perform read operation. Declare a variable str of string type. If(f) Declare another variable ss of ostringstream type. Call rdbuf() fuction to read data of file object. Put the data of file object in ss. Put the string of ss into the str string. Print the value of str. End.
예시
#include<iostream> #include<fstream> #include<sstream> #include<string> using namespace std; int main() { ifstream f("a.txt"); //taking file as inputstream string str; if(f) { ostringstream ss; ss << f.rdbuf(); // reading data str = ss.str(); } cout<<str; }
입력
a.txt data file containing the text “hi”
출력
hi