Loading previous year questions
Programming and Data Structures · Programming in C
Official IIT answer key · IIT Madras · Audited Aug 2026
GATE CSE 2019 Q27 · MCQ · 2 marks
#include <stdio.h>
int r(){
static int num=7;
return num--;
}
int main(){
for (r();r();r())
printf("%d",r());
return 0;
}
Which one of the following values will be displayed on execution of the programs?Key concept
No account needed
Sit 5 related Programming in CPYQs as a guest. We'll score the set and show which traps cost marks — sign in only if you want to save the run.
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 →Consider the following C program: #include int r() static int num=7; return num--; int main() for (r();r();r()) printf("%d",r()); return 0; Which one of the following values will be displayed on execution of the programs?
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.