Switch case MCQ 11: Macro identifier (#define) in switch

#include"stdio.h"#define var 1void main(){ int choice = 1 ; switch(choice) {  case var:         printf("nAllas");        break;
  case 2:        printf("nBabo");        break;
  case 3:        printf("nHurray");        break; }}

1. Babo
2. Error : Variables are not allowed
3. Hurray
4. Allas

1. #define is preprocessor
2. Before Executing program Macro processor just replaces the ‘var’ by its eqivalent definition 
3. Here ‘var’ is replaced by 1 and case 1 will be executed