getline function won't read input

[mellow summit]

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[worldly eagle]

!format

[mellow summit]

int main() {
  // Main message:
  cout << "1. Encrypt message" << endl;
  cout << "2. Decrypt message" << endl;
  cout << "3. Show decrypted possibilities" << endl;
  cout << "4. Break code" << endl;
  cout << "Enter choice: ";

  int choice, shift, direction;
  string messege, encriptedMessege;
  cin >> choice;

  switch (choice) {
    case 1: {
      cout << "Enter shift (1-26): ";
      cin >> shift;

      cout << "Enter direction (f or b): ";
      cin >> direction;

      cin.ignore();
      cout << "Enter message: ";
      getline(cin, messege);

      encriptedMessege = encryptMessege(messege, shift, direction);
      cout << "Encrypted message: " << encriptedMessege;
      break;
    }
  }
}

oz

Formatted by nou

[worldly eagle]

!code

[mellow summit]

How to Format Code on Discord

Markup

```cpp
int main() {}
```

Result

int main() {}

Note: Back-tick (`) not quotes (')

[worldly eagle]

Why do you have the cin.ignore() without arguments?

You’re close to solving the problem of getline getting skipped

[shell scaffold]

I didn't know it needed arguments

[worldly eagle]

Do you know what the function does?

[shell scaffold]

does it get rid of whitespace? im pretty sure thats my issue but i cant figure out how to fix it

the suggestions ive seen was use cin.ignore or use getline twice but neither worked for me

[worldly eagle]

It gets rid of more than just white spaces. It takes the size of the characters you mentioned or till it reaches a delimiter in the input stream and discards them.

A

By the curly bracket I mean the case 1: {} should just be case 1: \statements then break after the statements

[shell scaffold]

ok i got rid of the brackets and i tried cin.ignore(numeric_limits<streamsize>::max(), '\n') and it still wont read any input

it just skips it completely

[worldly eagle]

Move the cin.ignore(numeric_limits<streamsize>::max(), '\n'); right before the getline statement and compile it again

[shell scaffold]

ok yes it works now thank you

[worldly eagle]

Nice

I found this from stackoverflow and I think it describes it better than I did. “for std::cin statements you use ignore before you do a getline call, because when a user inputs something with std::cin, they hit enter and a '\n' char gets into the cin buffer. Then if you use getline, it gets the newline char instead of the string you want.”

[mellow summit]

@shell scaffold Has your question been resolved? If so, type !solved :)

@shell scaffold

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