Why Does `getline()` Skip Input After Reading an Integer?

getline() Issues: Skipping the Newline

When using getline(cin, str) to retrieve user input after reading an integer using cin >> number, you may encounter an unexpected behavior where the prompt for the name skips the input for str. This occurs because getline(cin, str) reads and discards the newline character left by the previous integer input.

To address this issue, you can employ std::ws before getline(cin, str) to skip whitespace, including newlines, before reading the string. This ensures that getline(cin, str) correctly reads the user input without skipping the name prompt:

int number;
string str;
int accountNumber;

cout << "Enter number:";
cin >> number;
cout << "Enter name:";
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
getline(cin, str);
cout << "Enter account number:";
cin >> accountNumber;

By using cin.ignore, you efficiently bypass any remaining whitespace or newlines, allowing getline(cin, str) to capture the user's name input as intended.

The above is the detailed content of Why Does `getline()` Skip Input After Reading an Integer?. For more information, please follow other related articles on the PHP Chinese website!