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New array declaration

Jean Paul Talledo Vilela

Hi everyone

can someone tell me how to declare a array of 20 characteres. I wanto to use this array to fill with a string and then display it in a LCD. Also I wanto to use a pointer to read or write in this array

thanks

Parents
  • 0 in reply to Andy Neil

    but, if the length of the string which you declared is twenty,you don't need to specify the length,but while it is less than 20, for example

    char idata str[]="hello";
    however,you need to store a 20-length string later on, does's it work?
    eg.
    strcpy(str,"this a 20-char sting");

Reply
  • 0 in reply to Andy Neil

    but, if the length of the string which you declared is twenty,you don't need to specify the length,but while it is less than 20, for example

    char idata str[]="hello";
    however,you need to store a 20-length string later on, does's it work?
    eg.
    strcpy(str,"this a 20-char sting");

Children
  • 0 in reply to Nocky Tian

    "you need to store a 20-length string later on"

    that's why I said, "...unless you have a specific reason to do so..."

    In that case, yes - you would need to explicitly state the length as 21 in the definition.

    strcpy(str,"this a 20-char sting");
    The 1st parameter to strcpy just tells it where to start copying to; see strncpy if you want to limit the maximum number of characters to copy!