How to check if a string is in an array of strings in C?

Question

How to write below code in C? Also: is there any built in function for checking length of an array?

Python Code

x = [\'ab\', \'bc\'          


        

Answer 1

A possible C implementation for Python's in method could be

#include 

int in(char **arr, int len, char *target) {
  int i;
  for(i = 0; i < len; i++) {
    if(strncmp(arr[i], target, strlen(target)) == 0) {
      return 1;
    }
  }
  return 0;
}

int main() {
  char *x[3] = { "ab", "bc", "cd" };
  char *s = "ab";

  if(in(x, 3, s)) {
    // code
  }

  return 0;
}

Note that the use of strncmp instead of strcmp allows for easier comparison of string with different sizes. More about the both of them in their manpage.