GATE CS 2019 Set 1 — Question 28

NAT+1 / -0EasyFunctions & RecursionC ProgrammingProgramming & Data Structures

Programming & Data Structures → C Programming → Functions & Recursion

Last updated 5 September 2026

Question

Consider the following C program:#include <stdio.h> int jumble(int x, int y){ x=2*x+y; return x; } int main(){ int x=2, y=5; y=jumble(y,x); x=jumble(y,x); printf("%d \n", x); return 0; } The value printed by the program is _______.

Correct answer26 to 26SolutionLet's trace the execution:1.int x=2, y=5;2.y = jumble(y, x); calls jumble(5, 2).Inside jumble(5, 2): parameter x gets 5, y gets 2.x = 2*5 + 2 = 12.Returns 12.Back in main, y becomes 12. x is still 2.3. x = jumble(y, x); calls jumble(12, 2).Inside jumble(12, 2): parameter x gets 12, y gets 2.x = 2*12 + 2 = 26.Returns 26.Back in main, x becomes 26.4. printf("%d \n", x); prints 26.Turn this into a strength.Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer26 to 26SolutionLet's trace the execution:1.int x=2, y=5;2.y = jumble(y, x); calls jumble(5, 2).Inside jumble(5, 2): parameter x gets 5, y gets 2.x = 2*5 + 2 = 12.Returns 12.Back in main, y becomes 12. x is still 2.3. x = jumble(y, x); calls jumble(12, 2).Inside jumble(12, 2): parameter x gets 12, y gets 2.x = 2*12 + 2 = 26.Returns 26.Back in main, x becomes 26.4. printf("%d \n", x); prints 26.

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