Question

I was wondering if there is a way I can extract everything before I hit a certain word in a string. The string I have created has been malloced and then populated. I want to create a new string with everything before a certain substring so

String1 = “I need coffee”

how can I extract everything before coffee?

Any ideas?

Thanks

Answer 1

Use strstr to locate the substring, and strncpy with a bit of pointer arithmetic (n = startOfPrefix – startOfString) to copy the prefix to a new buffer, don’t forget to null terminate the new string.

If you just want to throw away the substring and everything after it you could just set the location returned by strstr to '\0', to terminate the string there.