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Why Doesn\'t `getline` Prompt for Input After Using the `>>` Operator?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-11-30 11:26:11724browse

Why Doesn't `getline` Prompt for Input After Using the `>>` Operator?
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getline Not Prompting for Input

In this code snippet, the problem arises when using getline after using the >> operator. When >> is used to read input, the user's input is followed by a newline character that remains in the input buffer. This behavior becomes problematic when getline is called immediately after, as it expects to read a line of input but finds the newline character and terminates without prompting the user.

Solution:

To resolve this issue, there are two viable solutions:

  1. Use ignore to Consume the Newline:
    Call ignore to consume the newline character from the input buffer before using getline.

    cin.ignore();
    getline(cin, mystr);
  2. Use getline Exclusively:
    Instead of mixing >> and getline, use getline exclusively to read all input. This approach simplifies the code and eliminates potential issues related to newline characters.

    getline(cin, name);
    getline(cin, i);
    getline(cin, mystr);

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