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Programming and Data Structures · Programming in C
Official IIT answer key · IIT Kharagpur · Audited Aug 2026
GATE CSE 2014 Set 3 Q10 · MCQ · 1 mark
C = 100;
for i = 1 to n do
for j = 1 to n do
{
Temp = A[i][j] + C;
A[i][j]= A[j][i];
A[j][i] = Temp - C;
}
for i = 1 to n do
for j = 1 to n do
output (A[i][j]);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 →Let A be a square matrix of size n n. Consider the following pseudocode. What is the expected output? C = 100; for i = 1 to n do for j = 1 to n do Temp = A[i][j] + C; A[i][j]= A[j][i]; A[j][i] = Temp - C; for i = 1 to n do for j = 1 to n do output (A[i][j]);
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Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.