C language: How to get the remaining string after using strtok() once

Question

My string is \"A,B,C,D,E\"
And the separator is \",\"
How can I get the remaining string after doing strtok() once, that is \"B,C,D,E\"

char a[] = \"A,B,         


        

Answer 1

strtok remembers the last string it worked with and where it ended. To get the next string, call it again with NULL as first argument.

char a[] = "A,B,C,D,E";
const char *separator = ",";
char *b = strtok(a, separator);
while (b) {
    printf("element: %s\n", b);
    b = strtok(NULL, separator);
}

Note: This is not thread safe.