copying or concatinating string from 1st bit, leaving 0th bit

Hello,

If i have 2 strings str1 and str2, i would like to copy/concatenate str2 to str1, from 1st bit leaving the 0th bit.

How do i do it?

I think you mean a byte, not a bit.
This is related to your other post, which is not readable, at least for me.

strcpy(str1, &str2[1]);
strcat(str1, &str2[1]);

Thanks a lot!!!