std::getline on std::cin

by

Most likely you are trying to read a string after reading some other data, say an int.

consider the input:

11
is a prime

if you use the following code:

std::cin>>number;
std::getline(std::cin,input)

the getline will only read the newline after 11 and hence you will get the impression that it’s not waiting for user input.

The way to resolve this is to use a dummy getline to consume the new line after the number.

More Related Contents:

  1. Using getline(cin, s) after cin [duplicate]
  2. cin and getline skipping input [duplicate]
  3. When and why do I need to use cin.ignore() in C++?
  4. std::cin.getline( ) vs. std::cin
  5. getline not asking for input? [duplicate]
  6. cin.getline() is skipping an input in C++ [duplicate]
  7. C++ Reading an unknown number of integers to cin and outputting the sum
  8. c++ if specific words from string
  9. std::cin input with spaces?
  10. Why would we call cin.clear() and cin.ignore() after reading input?
  11. changing the delimiter for cin (c++)
  12. how do I validate user input as a double in C++?
  13. How to cin Space in c++?
  14. How do I deal with the max macro in windows.h colliding with max in std?
  15. Read binary data from std::cin
  16. c++ Read from .csv file
  17. How to cin values into a vector
  18. How to read cin with whitespace up until a newline character?
  19. Why is this cin reading jammed?
  20. How to reset std::cin when using it?
  21. cin for an int inputing a char causes Loop that is supposed to check input to go wild
  22. cin.ignore(numeric_limits::max(), ‘\n’)
  23. Multiple inputs on one line
  24. How to signify no more input for string ss in the loop while (cin >> ss)
  25. Problem of using cin twice
  26. getline() does not work if used after some inputs [duplicate]
  27. Press Enter to Continue
  28. Getline keeps on getting newline character. How can I avoid this?
  29. How to read in user entered comma separated integers?
  30. How is “std::cin>>value” evaluated in a while loop?

Leave a Comment