//Declaration: size_t strcspn(const char *str1, const char *str2);
//Return: returns the index of the first character in *str1 that matches any of the characters in *str2.
#include
#include
int main(void)
{
int len;
len = strcspn("this is a test", "ab");
printf("%d", len);
return 0;
}
/*
8*/