C++ erasing parts of a string

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December 6th, 2004, 04:30 AM

lee54321

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C++ erasing parts of a string

Hi all, Im trying to write a calculator in visual c++. So far so good but i cant get the backspace key to work. I want it to delete the last number added to a string variable - any ideas.

December 6th, 2004, 05:59 AM

marmo

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If your asking how to erase the last element in a string try this.

Code:

   string strSample("Sample");
   strSample.erase( strSample.size() - 1, 1 );

December 6th, 2004, 03:53 PM

piepes

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can you not get a simple \b to work properly?

always works for me!

December 6th, 2004, 11:35 PM

loopy123

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I GOT A REAL RELATED QUESTION

How do you delete the first and only first entery in a string?!

December 7th, 2004, 05:19 AM

kode_monkey

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Is it a C++ string, a C char array or something else? Could you be more specific I don't understand what you mean by deleting an entry from a string.

-KM-

December 7th, 2004, 05:41 AM

marmo

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You guys should learn the Standard Template Library, it is and will be your best friend for a longtime. This is a good place to start. http://www.msoe.edu/eecs/ce/courseinfo/stl/
To answer your question to erase the first letter in the string do this.

Code:

    string strSample("Sample");
    strSample.erase( 0, 1 );	  // "ample"

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