String and its index

In c: Explain the output

#include  
  int main() 
  { 
    int a=3, b = 5; 
    printf(&a["Ya!Hello! how is this? %s\n"], &b["junk/super"]); 
    printf(&a["WHAT%c%c%c  %c%c  %c !\n"], 1["this"], 
       2["beauty"],0["tool"],0["is"],3["sensitive"],4["CCCCCC"]); 
    return 0; 
  }