Get length of substring composed of given characters: how to use strspn : String Length « String « C / ANSI-C

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C / ANSI-C » String » String Length Screenshots  Get length of substring composed of given characters: how to use strspn #include <stdio.h> #include <string.h> int main () {   int i;   char key[] = "890th";   char str[] = "1234567890";   i = strspn (key, str);      printf ("Length of initial number is %d\n", i);   return 0; }                     Related examples in the same category 1. String length 2. Computes the length of a line 3. Lengths of strings 4. Get the string length 5. Get length of substring composed of given characters 6. Add null terminator to string end 7. print the string forward and backwards 8. String operator: get length, compare and find a char 9. Return string length: how to use strlen 10. Check string length and set string end