splitting strings...

this has been puzzling me for some time now, i've heard that it can be done with strtok() but i cant get my head around it....

basically i want to split a 4 character string i.e. 'ABCD' in half, and store the results into two different variables. so, if the string x is equal to 'ABCD', then i want to make y = 'AB' and z = 'CD'. what is the easiest way to do this?

strncpy

Simplest code to solve exactly the problem you describe:

Code:

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char x[] = "ABCD";
char y[3];
char z[3];

y[0] = x[0];
y[1] = x[1];
y[2] = 0;

z[0] = x[2];
z[1] = x[3];
z[2] = 0;

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However, I expect that you don't always have 4-letter strings that you want to make into two-letter strings, and then the problem gets a bit hairier.

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Mats

matsp, the strings are always 4 characters long but sometimes they may contain numbers although I dont think this would matter in the example you showed me before. thanks.

vart, could you possibly elaborate? i'm aware that strncpy() copies no more than a set number of bytes, but how would this apply to my question?

cheers guys.

Quote:

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Originally Posted by newbie_socketsp

vart, could you possibly elaborate? i'm aware that strncpy() copies no more than a set number of bytes, but how would this apply to my question?

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you can ask it to copy 2 bytes from the original string...
but if it is always 2 bytes - using Mats's method is better