Loading previous year questions
Programming and Data Structures · Programming in C
Official IIT answer key · IIT Guwahati · Audited Aug 2026
GATE CSE 2025 Set 2 Q63 · NAT · 2 marks
#include <stdio.h>
int g(int n) {
return (n+10);
}
int f(int n) {
return g(n*2);
}
int main() {
int sum, n;
sum=0;
for (n=1; n<3; n++)
sum += g(f(n));
printf ("%d", sum);
return 0;
}
The output of the given C program is ________. (Answer in integer)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 g(int n) return (n+10); int f(int n) return g(n*2); int main() int sum, n; sum=0; for (n=1; n The output of the given C program is … (Answer in integer)
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.