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

2 votes

1 answer

61

c programming
#include <stdio.h> int main() { int i = -1; int x = (unsigned char)i; printf("%d", x); return 0; } output is 255 , but please explain how

#include <stdio.h int main() { int i = -1; int x = (unsigned char)i; printf("%d", x); return 0; }output is 255 , but please explain how

SSR17

299 views

SSR17 asked Feb 29

6 votes

1 answer

62

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 26
What will be the output of the following C program? #include<stdio.h> void main() { int i=6; for(--i; --i; i--) { printf("%d",i); } } $42$ $31$ Infinite loop None of these

What will be the output of the following C program?#include<stdio.h void main() { int i=6; for( i; i; i ) { printf("%d",i); } }$42$$31$Infinite loopNone of these

GO Classes

510 views

GO Classes asked Jan 21

6 votes

2 answers

63

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 13
What will be the output of following program ? #include <stdio.h> int thefunction(int a) { static int b = 0; b++; a = a + b; return a; } int main() { int b = 0; int i; for (i = 1; i <= 3; i++) { b = b + thefunction(i); } printf("%d\n", b); return 0; }

What will be the output of following program ?#include <stdio.h int thefunction(int a) { static int b = 0; b++; a = a + b; return a; } int main() { int b = 0; int i; for ...

GO Classes

613 views

GO Classes asked Jan 21

5 votes

1 answer

64

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 18
What will be output printed by the following program? #include<stdio.h> main() { int c=4; switch(c) { c=c-1; case 4: printf("IITB "); break; default: printf("IISc "); case 3: printf("IITM "); case ... ;IITD"); } } $\text{IITB IITM}$ $\text{IITB IISc IITM}$ $\text{IITB}$ $\text{IITB IITM IITD}$

What will be output printed by the following program?#include<stdio.h main() { int c=4; switch(c) { c=c-1; case 4: printf("IITB ")...

GO Classes

438 views

GO Classes asked Jan 28

6 votes

1 answer

65

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 14
What will be the output of the following program? main() { int a[2][2] = { {1,2},{3,4} }; int(*p)[2][2]; p = &a; printf("%d", (*p)[0][0]); } $1$ $3$ $4$ None of these

What will be the output of the following program?main() { int a = { {1,2},{3,4} }; int(*p) ; p = &a; printf("%d", (*p)[0][0]); }$1$$3$$4$None of these

GO Classes

477 views

GO Classes asked Jan 21

1 votes

1 answer

66

Array
Does C support fractional Indices? float x = some fraction; Is float a[x] valid declaration?

Does C support fractional Indices?float x = some fraction;Is float a[x] valid declaration?

Mrityudoot

209 views

Mrityudoot asked Feb 2

4 votes

1 answer

67

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 43
What will be the output of the following C program? #include <stdio.h> void Mickey(int**, int, int); void Mouse(int, int*); int main() { int a = 2, b = 3, c = 4; int *points = &a; Mickey(&points, b, c); printf("%d", ... x; *p = **points+1; Mouse(z, p); return; } void Mouse(int z, int *p) { *p = *p+1; return; }

What will be the output of the following C program?#include <stdio.h>void Mickey(int , int, int);void Mouse(int, int*);int main(){ int a = 2, b = 3, c = 4; int *poi...

GO Classes

478 views

GO Classes asked Feb 5

0 votes

0 answers

68

GATE 2024 CSE1
I have a question that can we use command line arguments without main function arguments? int main(int argc, char **argv){ }

I have a question that can we use command line arguments without main function arguments?int main(int argc, char argv){}

RahulVerma3

174 views

RahulVerma3 asked Mar 16

0 votes

1 answer

69

s.balaguruswami
Find the error of the following IP addresses. If the IP is valid, check its Class and determine whether the address is Unicast or Multicast. i) 237.15.2.1 ii) 256.1.8.9 iii) 114.34.2.8 iv) 255.254.0.1 v) 8.8.8.8

Find the error of the following IP addresses. If the IP is valid, check its Class and determine whether the address is Unicast or Multicast.i) 237.15.2.1ii) 256.1.8.9iii)...

Sheikh Rafi

138 views

Sheikh Rafi asked Feb 24

4 votes

0 answers

70

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 19
What will be the output of the following program? #include <stdio.h> int main() { int a[2][2] = { {1, 2}, {3, 4} }; int (*p)[2][2]; p = &a; printf("%d", (*p)[0][1]); return 0; } $1$ $2$ $3$ $4$

What will be the output of the following program?#include <stdio.h int main() { int a = { {1, 2}, {3, 4} }; int (*p) ; p = &a; printf("%d", (*p)[0] ); return 0; }$1$$2...

GO Classes

352 views

GO Classes asked Jan 28

4 votes

1 answer

71

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 54
Consider the following pseudocode procedure. Which of the following best describes procedure mystery? It returns a list of numbers from 1 to $n$. It prints every third number from 1 to $n$. It returns the sum of the numbers from 1 to $\mathrm{n}$. It returns the sum of the multiples of 3 from 1 to $n$.

Consider the following pseudocode procedure.Which of the following best describes procedure mystery?It returns a list of numbers from 1 to $n$.It prints every third numbe...

GO Classes

273 views

GO Classes asked Feb 5

3 votes

1 answer

72

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 47
#include<stdio.h> #include<string.h> char upstr[50]; void putStar (int n,char str[]){ upstr[n] = str[n]; if(n == strlen(str)) return; else upstr[n+1] = '*'; putStar(n+1,str); } int main() { char str[] = " ... , upstr); } What will be the output of the given program? h*e*l*l*o h*e*l*l*o* h*e*l*l* hello

#include<stdio.h #include<string.h char upstr[50]; void putStar (int n,char str[]){ upstr[n] = str[n]; if(n == strlen(str)) return; else upstr[n+1] = '*'; putStar(n+1,str...

GO Classes

364 views

GO Classes asked Jan 28

13 votes

8 answers

73

ISRO2015-69
If n has 3, then the statement a[++n]=n++; assigns 3 to a[5] assigns 4 to a[5] assigns 4 to a[4] what is assigned is compiler dependent

If n has 3, then the statement a[++n]=n++;assigns 3 to a[5]assigns 4 to a[5]assigns 4 to a[4]what is assigned is compiler dependent

milankamilya

8.7k views

milankamilya asked Jun 14, 2016

1 votes

0 answers

74

I have purchased the IIIT Hyderabad 2024 test series but i can't find the test series anywhere

Khushbu Chaudhary

114 views

Khushbu Chaudhary asked Feb 25

0 votes

1 answer

75

Linked List
How can we find the highest element in a singly linked list in O(1)? We are free to use any extra space.

How can we find the highest element in a singly linked list in O(1)? We are free to use any extra space.

Mrityudoot

207 views

Mrityudoot asked Feb 25

1 votes

1 answer

76

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 27
Consider the following C program:- #include <stdio.h> void ubswap(int **a, int **b) { int* temp = *a; *a = *b; *b = temp; } int main() { int x = 1, y = 9; int* u = &x; int* v = &y; int** a = &u; int** b ... $\text{ return 0 }?$ $x$ and $y$ $u$ and $v$ $a$ and $b$ None of the above

Consider the following C program:-#include <stdio.h void ubswap(int a, int b) { int* temp = *a; *a = *b; *b = temp; } int main() { int x = 1, y = 9; int* u = &x; int* v...

GO Classes

533 views

GO Classes asked Jan 21

51 votes

4 answers

77

GATE CSE 2000 | Question: 1.17, ISRO2015-79
Consider the following C declaration: struct { short x[5]; union { float y; long z; } u; )t; Assume that the objects of the type short, float and long occupy $2$ bytes, $4$ bytes and $8$ bytes, respectively. The memory requirement for variable $t$, ignoring alignment consideration, is: $22$ bytes $14$ bytes $18$ bytes $10$ bytes

Consider the following C declaration:struct { short x[5]; union { float y; long z; } u; )t;Assume that the objects of the type short, float and long occupy $2$ bytes, $4$...

Kathleen

21.0k views

Kathleen asked Sep 14, 2014

52 votes

3 answers

78

GATE CSE 2000 | Question: 1.12
The most appropriate matching for the following pairs ... $X - 3 \ \ Y - 2 \ \ Z - 1$ $X - 3 \ \ Y - 1 \ \ Z - 2$

The most appropriate matching for the following pairs$$\begin{array}{|ll|ll|}\hline X: & \text{m = malloc(5); m = NULL;} & 1: & \text{using dangling pointers} \\\hline Y...

Kathleen

12.1k views

Kathleen asked Sep 14, 2014

1 votes

1 answer

79

Array, Memory Allocation
In what cases does an uninitialized array have values = 0 and for which cases does it have values = garbage values. How to differentiate?

In what cases does an uninitialized array have values = 0 and for which cases does it have values = garbage values. How to differentiate?

Mrityudoot

327 views

Mrityudoot asked Feb 2

2 votes

1 answer

80

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 12
Consider the following two declarations for $\textsf{arr1}$ and $\textsf{arr2}:$ int arr1[2][3]; int r1[3]; int r2[3]; int * arr2[2] = {r1, r2}; Assume that the size of the integer is $4$ Bytes and the ... $\operatorname{sizeof}(\operatorname{arr}1)=48$ bytes and sizeof $(\operatorname{arr}2)=32$ bytes

Consider the following two declarations for $\textsf{arr1}$ and $\textsf{arr2}:$int arr1 [3]; int r1[3]; int r2[3]; int * arr2 = {r1, r2};Assume that the size of the int...

GO Classes

459 views

GO Classes asked Jan 21

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