copying a string
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Thread: copying a string

  1. #1
    Join Date
    Apr 2010
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    copying a string

    i have a question about copying a string.

    basically i have a function that passes an array of characters, it will be a phone number and i want to copy the numbers into a string in the format of the first 3, then the next three then the last 4.

    is there a way to set where i start my copy from in strcpy or is there another function i can use that will assist in doing this?

  2. #2
    Join Date
    Feb 2002
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    4,640

    Re: copying a string

    I don't understand... What do you mean, "copy the numbers into a string in the format of the first 3, then the next three then the last 4."? You want three separate strings?

    Viggy

  3. #3
    GCDEF is offline Elite Member Power Poster
    Join Date
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    12,098

    Re: copying a string

    Quote Originally Posted by turlisk View Post
    i have a question about copying a string.

    basically i have a function that passes an array of characters, it will be a phone number and i want to copy the numbers into a string in the format of the first 3, then the next three then the last 4.

    is there a way to set where i start my copy from in strcpy or is there another function i can use that will assist in doing this?
    Is your string a char array, or a string?

    If it's a char array, just add the offset for the start position you want to the source pointer you pass to strcpy.

    If it's a string, use substr().

  4. #4
    Join Date
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    Re: copying a string

    I guess he means that the C-string number is like 123-456-7890 and he wants a copy without the -.
    Something like this maybe
    Code:
    char in[] = "123-456-7890";
    char out[sizeof(in)-2]={0};
    memcpy( &out[0], &in[0], 3 );
    memcpy( &out[3], &in[4], 3 );
    memcpy( &out[6], &in[8], 4 );
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