Is it possible to access elements of an array without using indexes in the C programming language?

[SubhanUllah]

Sure, like this:

#include <stdio.h> 
 
int main() { 
  char *a = "Gdkkn\37vnqkc"; 
  for (int i = 0; i < strlen(a); i++)  
    printf("%c", *(a + i) + 1); 
} 

The a is an array. Its elements are accessed without indexes.