Having a hard time trying to understand this, can you figure it out??

Question

What is the output of this code? And why?
char str[] = "%d %c", arr[] = "Sololearn";
printf(str, 0[arr], 2[arr + 3]);

Answer 1

the first char array str has the formatting in it, and the second arr is having a string "Sololearn
when the printf() is executed

0[arr] is equal to *(arr+0) which is 'S' and as the str[] has %d so it returns ascii value of 'S' which is 83

2[arr +3] is equal to *(arr+5) which takes the char value 'e'
So it returns output as :
83 e