convert an array to a string in C

#include <stdio.h>
#include <string.h>

int main() 
{
   char arr[20] = "hello, world";
   char str[20];
   int i;
   
   /* copy the contents of arr[] to str[] */
   for(i = 0; arr[i] != '\0'; ++i) {
      str[i] = arr[i];
   }
   str[i] = '\0';
   
   printf("string = %s", str);
   
   return 0;
}

This code converts an array to a string in C. First, the code creates two character arrays, one named arr[] and the other named str[]. Then, the for loop goes through the array arr[] and copies each element one by one to the array str[]. Finally, printf prints out the str[] array, which is a string. The functions strlen and strcpy can also be used to achieve the same result.