C2079 'stream' uses undefined class 'std::basic_ifstream<char,std::char_traits<char>>'
First, make sure you have included the necessary header file for input/output operations:
#include <fstream>
Then, declare an object of type std::ifstream
:
std::ifstream fileStream;
Ensure that you have access to the file you are trying to open and that the file path is correctly provided:
fileStream.open("example.txt");