String.indexOf function in C
c, string
Solution
I think that
size_t strcspn ( const char * str1, const char * str2 );
is what you want. Here is an example pulled from here:
/* strcspn example */
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] = "fcba73";
char keys[] = "1234567890";
int i;
i = strcspn (str,keys);
printf ("The first number in str is at position %d.\n",i+1);
return 0;
}
Problem
Is there a C library function that will return the index of a character in a string? So far, all I've found are functions like strstr that will return the found char *, not it's location in the original string.