Removing First Element in Char * Array Objective C

Question

I have a variable buf stored as char *buf this variable comes out to be an ID that looks something like /3B494538-9120-46E0-95D4-51A4CF5712A1. I want to remove the first element of the char *buf so that /3B494538-9120-46E0-95D4-51A4CF5712A1 becomes 3B494538-9120-46E0-95D4-51A4CF5712A1. How do I do this?

toma · Accepted Answer · 2017-07-02 23:46:38Z

4

You can create an array that reuses buf's memory:

char *nonCopyBuf = buf + 1;

or allocate new memory storage:

char *copyBuf = malloc(strlen(buf));
memcpy(copyBuf, buf + 1, strlen(buf));
//...
free(copyBuf);

edited Jul 2, 2017 at 23:46

answered Jul 2, 2017 at 23:30

toma

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2 Comments

Coldsteel48 Over a year ago

(strlen(buf) -1) ? maybe ? since new array should be 1 char less

toma Over a year ago

@ColdSteel it is also needed to copy a 0-value byte that terminates sting and is not included in strlen() result.

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