How to find a string in a 2D array of char in C

Question

Given the two dimensional array of characters in C:
char arr[5][3]={"11","22","33","44","55"};
how do you find the index of "22" in the given array?

This loop doesn't seem to work:

int i = 0;
char ch[3] = "22";
while(i < 5){
if(arr[i] == ch){printf("Index of \"22\" = %d",i); break;}
i++;
}

Answer 1

You cannot use == to compare 2 strings in C. That basically compares their addresses since a string is a char array. In <string.h>, there is strcmp(char*, char*), Which compares 2 strings and return 0 if they are equivalent.

In a nutshell, include <string.h> and use
!strcmp(arr[i], ch).

Answer 2

Thanks!