Using C++ ifstream extraction operator>> to read formatted data from a file

Question

As my learning, I am trying to use c++ ifstream and its operator>> to read data from a text file using code below. The text file outdummy.txt has following contents:

Answer 1

Since you have elected to use C-strings, you can use the getline method of your ifstream object (not std::getline() which works with std::strings), which will allow you to specify the C-string and a maximum size for the buffer.

Based on what you had, and adding an additional buffer for the second line:

char buf[100];
char buf2[100];

in.getline(buf,sizeof(buf));
in.getline(buf2,sizeof(buf2));
in >> a;

However, as the other poster has proposed, try using the std::string and its methods, it will make your life easier.