Programming and Data Structures · Programming in C
Official IIT answer key · IIT Delhi · Audited Aug 2026
GATE CSE 2012 Q3 · MCQ · 1 mark
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" ) ; }Key concept
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Topic notes
In GATE CS, Programming in C is tested extensively through rigorous code tracing, pointer mechanics, and fundamental semantics rather than high-level syntax trivia. Questions emphasize pointer arithmetic and multidimensional array decay, storage classes (especially static local variables), evaluation order, side effects of increment/decrement operators, parameter passing mechanisms (pass-by-value vs pass-by-reference), and recursive program state tracking. The topic features a nearly balanced split between NAT and MCQ items across 1-mark and 2-mark categories, demanding precise, bug-free execution traces without a compiler.
Full Programming in C guide →What will be the output of the following C program 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" ) ;
Topic-wise GATE CS PYQs with verified steps
Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.