how to retrieve only last specify length of byte

[vintl]

I have this string info[35]. i want to extract the last 7 byte, so i shall extract from &info[29]. I use memmove to do this extracting, but return funny characters.

memset(nfo, 0x00, sizeof(nfo));
memcpy(nfo, info, sizeof(info)); //copy whole string 35 byte
memmove(nfo, &nfo[29], 7); //move the last 7 byte to nfo
memcpy(db_info, nfo, 7); //copy the 7byte nfo to db_info

is this correct?
thanks

 

[ElaineMay]

hi,

you wrote as following:

memset(nfo, 0x00, sizeof(nfo));

but sizeof(nfo) = NULL, if you define it as string, you can get the length of it as strlen(nfo) after you valued it. so please paster your definition first.

 

[vintl]

thanks. it work now, i thought it was the array problem.