Hot questions in Programming in C / GATE Overflow for GATE CSE

31 votes

11 answers

101

GATE CSE 2017 Set 2 | Question: 14
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: $0, 0$ $0, 1$ $1, 0$ $1, 1$

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 $...

Madhav

9.8k views

Madhav asked Feb 14, 2017

2 votes

4 answers

102

ISRO2014-47
The following three 'C' language statements is equivalent to which single statement? y=y+1; z=x+y; x=x+1 z = x + y + 2; z = (x++) + (++y); z = (x++) + (y++); z = (x++) + (++y) + 1;

The following three 'C' language statements is equivalent to which single statement?y=y+1; z=x+y; x=x+1z = x + y + 2;z = (x++) + (++y);z = (x++) + (y++);z = (x++) + (++y)...

jenny101

5.0k views

jenny101 asked Jun 25, 2016

73 votes

2 answers

103

GATE CSE 2013 | Question: 42
What is the return value of $f(p,p)$, if the value of $p$ is initialized to $5$ before the call? Note that the first parameter is passed by reference, whereas the second parameter is passed by value. int f (int &x, int c) { c = c - 1; if (c==0) return 1; x = x + 1; return f(x,c) * x; }

What is the return value of $f(p,p)$, if the value of $p$ is initialized to $5$ before the call? Note that the first parameter is passed by reference, whereas the second ...

gatecse

21.4k views

gatecse asked Aug 7, 2014

0 votes

1 answer

104

UGC NET CSE | June 2010 | Part 2 | Question: 33
Consider the following left associative operators in decreasing order of precedence : - subtraction (highest precedence) * multiplication $ exponentiation (lowest precedence) What is the result of the following expression ? 3 – 2 * 4 $ | * 2** 3 $-61$ $64$ $512$ $4096$

Consider the following left associative operators in decreasing order of precedence :- subtraction (highest precedence)* multiplication$ exponentiation (lowest precedence...

makhdoom ghaya

1.5k views

makhdoom ghaya asked Sep 16, 2016

44 votes

4 answers

105

GATE CSE 2008 | Question: 60
What is printed by the following C program? int f(int x, int *py, int **ppz) { int y, z; **ppz += 1; z = **ppz; // corrected z = *ppz; to z = **ppz; *py += 2; y = *py; x += 3; return x+y+z; } void main() { int c, *b, **a; c = 4; b = &c; a = &b; printf("%d", f(c, b, a)); } $18$ $19$ $21$ $22$

What is printed by the following C program?int f(int x, int *py, int ppz) { int y, z; ppz += 1; z = ppz; // corrected z = *ppz; to z = ppz; *py += 2; y = *py; x += 3;...

Kathleen

18.2k views

Kathleen asked Sep 12, 2014

3 votes

4 answers

106

C PROGRAMMING

kamboj

3.3k views

kamboj asked Mar 20, 2017

37 votes

4 answers

107

GATE IT 2005 | Question: 58
Let $a$ be an array containing $n$ integers in increasing order. The following algorithm determines whether there are two distinct numbers in the array whose difference is a specified number $S > 0$. i = 0; j = 1; while (j < n ){ if (E) j++; else if (a[j] - a[i] == S) break; else i+ ... $a[j] - a[i] < S$ $a[i] - a[j] < S$ $a[i] - a[j] > S$

Let $a$ be an array containing $n$ integers in increasing order. The following algorithm determines whether there are two distinct numbers in the array whose difference i...

Ishrat Jahan

9.9k views

Ishrat Jahan asked Nov 3, 2014

32 votes

5 answers

108

GATE IT 2007 | Question: 31
Consider the C program given below : #include <stdio.h> int main () { int sum = 0, maxsum = 0, i, n = 6; int a [] = {2, -2, -1, 3, 4, 2}; for (i = 0; i < n; i++) { if (i == 0 || a [i] < 0 || a [i] < a [ ... } if (sum > maxsum) maxsum = sum ; printf ("%d\n", maxsum); } What is the value printed out when this program is executed? $9$ $8$ $7$ $6$

Consider the C program given below : #include <stdio.h int main () { int sum = 0, maxsum = 0, i, n = 6; int a [] = {2, -2, -1, 3, 4, 2}; for (i = 0; i < n; i++) { if (i =...

Ishrat Jahan

11.0k views

Ishrat Jahan asked Oct 29, 2014

0 votes

1 answer

109

GATE CSE 1988 | Question: 8iii
Write a LISP function to compute the product of all the numbers in a list. Assume that the list contains only number.

Write a LISP function to compute the product of all the numbers in a list. Assume that the list contains only number.

go_editor

503 views

go_editor asked Dec 19, 2016

0 votes

1 answer

110

Gate 2017 Set 1 minimum Comparisons
Consider an array A of size 31 consisting of 0's followed by number of 1's. In order to find the smallest index i such that A[i]=1 minimum number of comparisons required in worst case by optimal algorithm?

Consider an array A of size 31 consisting of 0's followed by number of 1's. In order to find the smallest index i such that A[i]=1 minimum number of comparisons required ...

yg92

234 views

yg92 asked Feb 12, 2017

37 votes

3 answers

111

GATE CSE 2010 | Question: 11
What does the following program print? #include<stdio.h> void f(int *p, int *q) { p=q; *p=2; } int i=0, j=1; int main() { f(&i, &j); printf("%d %d\n", i,j); return 0; } $2 \ 2$ $2 \ 1$ $0 \ 1$ $0 \ 2$

What does the following program print?#include<stdio.h void f(int *p, int *q) { p=q; *p=2; } int i=0, j=1; int main() { f(&i, &j); printf("%d %d\n", i,j); return 0; }$2 \...

go_editor

9.8k views

go_editor asked Sep 29, 2014

58 votes

3 answers

112

GATE CSE 2016 Set 1 | Question: 15
Consider the following C program. # include <stdio.h> void mystery (int *ptra, int *ptrb) { int *temp; temp = ptrb; ptrb =ptra; ptra = temp; } int main () { int a = 2016, b=0, c= 4, d = 42; mystery (&a, &b); if (a < c) mystery (&c, &a); mystery (&a, &d); printf("%d\n", a); } The output of the program is _________.

Consider the following C program.# include <stdio.h void mystery (int *ptra, int *ptrb) { int *temp; temp = ptrb; ptrb =ptra; ptra = temp; } int main () { int a...

Sandeep Singh

18.3k views

Sandeep Singh asked Feb 12, 2016

42 votes

2 answers

113

GATE IT 2008 | Question: 52
C program is given below: # include <stdio.h> int main () { int i, j; char a [2] [3] = {{'a', 'b', 'c'}, {'d', 'e', 'f'}}; char b [3] [2]; char *p = *b; for (i = 0; i < 2; i++) { for (j = 0; j < ... $\text{b e}$ $\text{c f}$ $\text{a c}$ $\text{e b}$ $\text{d f}$ $\text{a e}$ $\text{d c}$ $\text{b f}$

C program is given below:# include <stdio.h int main () { int i, j; char a [3] = {{'a', 'b', 'c'}, {'d', 'e', 'f'}}; char b [3] ; char *p = *b; for (i = 0; i < 2; i++)...

Ishrat Jahan

10.6k views

Ishrat Jahan asked Oct 28, 2014

30 votes

3 answers

114

GATE IT 2004 | Question: 58
Consider the following C program which is supposed to compute the transpose of a given $4 \times 4$ matrix $M$. Note that, there is an $X$ in the program which indicates some missing statements. Choose the correct option to replace $X$ in the program. #include<stdio.h> #define ROW 4 #define COL 4 ... j < 4; ++j){ M[i][j] = t; t = M[j][i]; M[j][i] = M[i][j]; }

Consider the following C program which is supposed to compute the transpose of a given $4 \times 4$ matrix $M$. Note that, there is an $X$ in the program which indicates ...

Ishrat Jahan

12.5k views

Ishrat Jahan asked Nov 2, 2014

50 votes

7 answers

115

GATE CSE 2016 Set 2 | Question: 35
The following function computes $X^{Y}$ for positive integers $X$ and $Y$. int exp (int X, int Y) { int res =1, a = X, b = Y; while (b != 0) { if (b % 2 == 0) {a = a * a; b = b/2; } else {res = res * a; b = b - 1; } } return res; } Which one of the following ... $X^{Y} = a^{b}$ $(res * a)^{Y} = (res * X)^{b}$ $X^{Y} = res * a^{b}$ $X^{Y} = (res * a)^{b}$

The following function computes $X^{Y}$ for positive integers $X$ and $Y$.int exp (int X, int Y) { int res =1, a = X, b = Y; while (b != 0) { if (b % 2 == 0) {a =...

Akash Kanase

14.2k views

Akash Kanase asked Feb 12, 2016

13 votes

4 answers

116

GATE CSE 2019 | Question: 18
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 ______________.

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"...

Arjun

9.9k views

Arjun asked Feb 7, 2019

1 votes

1 answer

117

Merge Sort Merge Procedure
Guys i was trying to implement merge procedure of merge sort i found some interesting results.I don't know why it happened but if you know please comment and clear my doubt This is my code #include <iostream> using namespace std; void ... garbage value don't know on second execution.When third time i executed i get correct Please help why its happening :)

Guys i was trying to implement merge procedure of merge sort i found some interesting results.I don't know why it happened but if you know please comment and clear my dou...

Himanshu Goyal

428 views

Himanshu Goyal asked Aug 31, 2016

31 votes

5 answers

118

GATE CSE 1999 | Question: 2.5
Given the programming constructs assignment for loops where the loop parameter cannot be changed within the loop if-then-else forward go to arbitrary go to non-recursive procedure call recursive procedure/function call repeat loop, which constructs will you not include in a programming language ... $\text{(vi), (vii), (viii)}$ $\text{(iii), (vii), (viii)}$

Given the programming constructsassignmentfor loops where the loop parameter cannot be changed within the loopif-then-elseforward go toarbitrary go tonon-recursive proced...

Kathleen

12.8k views

Kathleen asked Sep 23, 2014

5 votes

3 answers

119

GATE Overflow | Programming | Test 1 | Question: 4
Consider the following C functions: int f1(int a, int b) { while (a != b) { if(a > b) a = a - b; else b = b - a; } return a; } int f2(int a, int b) { while (b != 0) { int t = b; ... for all positive inputs but not f3 For some positive input all 3 functions return different values f2 and f3 return same value for all positive inputs but not f1

Consider the following C functions:int f1(int a, int b) { while (a != b) { if(a b) a = a - b; else b = b - a; } return a; } int f2(int a, int b) { while (b != 0) { int t...

Arjun

2.6k views

Arjun asked Oct 18, 2016

5 votes

2 answers

120

Find output of the following C program
#include <stdio.h> int main() { int y = 2; int z = y +(y = 10); printf("%d\n", z); }

#include <stdio.h int main() { int y = 2; int z = y +(y = 10); printf("%d\n", z); }

Mandeep Singh

18.4k views

Mandeep Singh asked Oct 22, 2016

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