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Programming and Data Structures · Programming in C
Official IIT answer key · IIT Roorkee · Audited Aug 2026
GATE CSE 2017 Set 2 Q14 · MCQ · 1 mark
void printxy(int x, int y) {
int *ptr;
x = 0;
ptr = &x;
y = *ptr;
*ptr = 1;
printf("%d,%d",x,y);
}
The output of invoking printxy(1,1) isKey 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 →Consider the following function implemented in C: void printxy(int x, int y) int *ptr; x = 0; ptr = &x; y = *ptr; *ptr = 1; printf("%d,%d",x,y); The output of invoking printxy(1,1) is
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.