How to extract a substring from a string in C?

Question

I tried using strncmp but it only works if I give it a specific number of bytes I want to extract.

char line[256] = This \"is\" an example. //I want to extr         


        

Answer 1

#include 
...        
substring[0] = '\0';
const char *start = strchr(line, '"') + 1;
strncat(substring, start, strcspn(start, "\""));

Bounds and error checking omitted. Avoid strtok because it has side effects.