Using getline() in C++

by

If you’re using getline() after cin >> something, you need to flush the newline character out of the buffer in between. You can do it by using cin.ignore().

It would be something like this:

string messageVar;
cout << "Type your message: ";
cin.ignore(); 
getline(cin, messageVar);

This happens because the >> operator leaves a newline \n character in the input buffer. This may become a problem when you do unformatted input, like getline(), which reads input until a newline character is found. This happening, it will stop reading immediately, because of that \n that was left hanging there in your previous operation.

More Related Contents:

  1. reading a line from ifstream into a string variable
  2. What am I not understanding about getline+strings?
  3. cin.getline() is skipping an input in C++ [duplicate]
  4. Getline keeps on getting newline character. How can I avoid this?
  5. What is the equivalent of `string` in C++
  6. How do I rename a file with a string using the rename() function (c++)? [closed]
  7. swap string a in place to string b in C++ [closed]
  8. How do you reverse a string in place in C or C++?
  9. Convert a String In C++ To Upper Case
  10. Converting a hex string to a byte array
  11. Need help with getline() [duplicate]
  12. Static constant string (class member)
  13. “\n” or ‘\n’ or std::endl to std::cout? [duplicate]
  14. c++ getline() isn’t waiting for input from console when called multiple times
  15. String literal matches bool overload instead of std::string
  16. Concatenate two string literals
  17. C++ Compare char array with string
  18. c++ Read from .csv file
  19. Error: invalid operands of types ‘const char [35]’ and ‘const char [2]’ to binary ‘operator+’
  20. What does the symbol \0 mean in a string-literal?
  21. How to strip all non alphanumeric characters from a string in c++?
  22. cannot convert ‘std::basic_string’ to ‘const char*’ for argument ‘1’ to ‘int system(const char*)’
  23. Passing const char* as template argument
  24. How to remove all substrings from a string
  25. initializing std::string from char* without copy
  26. C++ Adding String Literal to Char Literal
  27. std::string length() and size() member functions
  28. What is the type of a string literal in C++? [duplicate]
  29. Read into std::string using scanf
  30. Safer but easy-to-use and flexible C++ alternative to sscanf()

Leave a Comment