Question 3

Consider the C code segment:

char inChar = 'A' ;
switch ( inChar ) {
case 'A' : printf ("Choice A\ n") ;
case 'B' :
case 'C' : printf ("Choice B") ;
case 'D' :
case 'E' :
default : printf ( " No Choice" ) ; }

1. The variable inChar is initialized to 'A'.
2. The switch statement matches case 'A'.
3. The statement printf("Choice A\ n"); executes. Notice there are no break statements anywhere in the switch block, so execution falls through all subsequent cases.
4. It falls through case 'B', reaches case 'C', and executes printf("Choice B");.
5. It falls through case 'D', case 'E', and reaches default, executing printf(" No Choice");.

However, in the printed exam question, printf ("Choice A\ n") contained a space between the backslash and the 'n' (\ n), which is an invalid escape sequence in standard C (yielding compiler-dependent warnings or undefined/unspecified character output rather than a proper newline), and the printed choices in the paper had inconsistent spacing and line breaks.

Because of these typographic and specification ambiguities, GATE officially awarded Marks to All.