c quiz

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Anjuman College of Engineering and Technology, Sadar, Nagpur.

Computer Science and engineering department

presents

Envisage’13

“Over C War”By, Shabina Parveen

RULES Each Easy level question consists of 5

marks.Each Medium level question consists of 10

marksEach Hard level question consists of 15

marksAccording to the level chosen for betting,

for each correct answer plus marks & for each wrong answer respective marks will be deducted from the actual score

Categories

Medium

Question

Answer

Dennis Ritchie…

Categories

Medium

QuestionWould the following program give a

compilation error or warning?

#include<stdio.h> int main()

float I =10, *j;

void *k;

k = &I;

j = k;

printf(“%f\n”, *j);

return 0;

a. Yes b. No

Answer

Categories

Medium

QuestionPredict the output:

# define SQUARE(x) x*x;

inline float square(float y)

return y*y;

int main()

float a = 0.5, b = 0.5, c, d;

c= SQUARE (++a)l;

d = square (++b);

return 0;

Answer

Output: during preprocessing the macro SQUARE gets expanded into c=++x *++x;

You can notice the undesirable side effect in this macro expansion; the output is unpredictable because such side effect must not appear in inline function.

Categories

Medium

Question Which of the following statement

is true about the >> operator?

a. It divides a positive value by a power of two.

b. It multiplies a positive value by a power of two.

c. It adds a positive value with a power of two.

d. It subtracts from a positive value a power of two.

Answer

a. It divides a positive value by a power of two.

Categories

Medium

Question would the following code compile?

#include<stdio.h>

int main()

int a = 10, *j; a. Yes

void *k; b. no

j= k = &a;

printf(“%u %u\n , j, k”);

return 0;

Answer

Categories

Medium

#include<stdio.h>

int main()

int a[]={0,1,2,3.4};

int i , *p;

for(p=arr,i=0; p+i<=arr+4 ; p++ , i++)

printf(“%d”, , *(p+1));

return 0;

Answer

Output: 024

Categories

Medium

Question Which of the following

statement is correct?

a. Int a=64<<2;

b. Float a =6.42<<2;

c. Double a = 3.33<<2;

d. Long double a =3.67<<2;

Answer

a. Int a=64<<2;

Categories

Medium

Question Would the following program give a compilation

error or warning?

#include<stdio.h>

int main()

int *p1, i=25; a. Yes

void *p2; b. no

p1=&i;

p2=&i;

p1=p2;

p2=p1;

return 0;

Answer

Categories

Medium

Question

• In a file contains the line "I am a boy\r\n" then on reading this line into the array str using fgets(). What will str contain?

• A. "I am a boy\r\n\0"

• B. "I am a boy\r\0"

• C. "I am a boy\n\0"

• D. "I am a boy"

Answer

C. "I am a boy\n\0"

Categories

Medium

Question

What would be the result of the expression a^a?

c. Sum of two operands

d. Multiplication of two operands

Answer

Categories

Medium

Question Would the following program give a

#include<stdio.h>

int main()

float *p1,i=25.50; a. Yes

char *p2; b. No

p1=&i;

p2=&i;

return 0;

Answer

a. Yes

Categories

Medium

Question

Write a program in C to display any message without using semi colon anywhere in program?

Answer

#include <stdio.h>

void main()

if(printf(”Hello”))

NOTE: We can write the printf inside while or switch as well for same result.

Categories

Medium

QuestionWhat will be the output of the code

snippet given below:

#include<stdio.h>

Void main()

Int a =10,b =65;

Printf(“%d”,a<<(a&b));

a. 65 c. 0

d. 1 b. 10

Answer

Categories

Medium

Question Predict the output:

#include<stdio.h>

int main()

int a[]={10,20,30,40,50};

int j;

for(j=0;j<5;j++)

printf(“%d\n”, *a);

return 0;

Answer

Output:

Error message: Lvalue required in function main

Categories

Medium

Question

#include<stdio.h>

int main()

char str[20] = "Hello";

char *const p=str;

*p='M';

printf("%s\n", str);

return 0;

Answer

Categories

Medium

Question Who were the two main individuals

involved in development of K&R standard for C language?

a.Dennis Ritchie & John Von Neumann

b.Brian Kernighan & Dennis Ritchie

c. Grace Hopper & Niklaus Wirth

d. Dennis Ritchie & Bjarne Stroustroup

Answer

Brian Kernighan and Dennis Ritchie

Categories

Medium

Question Predict the output:

#include<stdio.h>

int main()

float a[]={13.24, 1.5, 1.5, 5.4, 3.5};

float *j, *k;

k=a+4;

i = j*2;

k =k/2;

printf(“%f %f\n”, *j. *k);

return 0;

Answer

Output:

Error message: illegal use of pointer in function main

Categories

Medium

Questionvoid main(){

int i=10;

static int x=i;

if(x==i)

printf("Equal");

else if(x>i)

printf("Greater than");

printf("Less than");

Answer

Compiler error

Categories

Medium

Question

Which of the following utility is used for compiling and linking the program?

a. Make

b. Makefile

c. Compiler

d. linker

Answer

a. Make

Categories

Medium

Question Would the following program give a

#include<stdio.h>

int main()

char a[]=”sunstroke”; a. Yes

char *p = “coldwave”; b. Noa = “coldwave”;

p = “sunstroke”;

printf(“%s %s\n”, a, p);

return 0;

Answer

Categories

Medium

Question

Write a c program to add two

numbers without add operator?

Answer

#include <stdio.h>

#include <conio.h>

int main(){

int a=1,b=2,c;

c=a-(-b);

printf(“%d”,c);

getch();

return 0;

Categories

Medium

Question

Which of the following function is used to copy data types other than strings from one variable to another?

a. memcpy() c. objcpy()

b. datacpy() d. strcpy()

Answer

a. memcpy()

Categories

Medium

Question

Predict the output:

#include<stdio.h>

#include<string.h>

int main()

char s[]=”rendezvous !”;

printf(“%d\n”, *(s + strlen (s)));

return 0;

Answer

Output: 0

Categories

Medium

QuestionWhat will be the output of the

code snippet given below?

#include<stdio.h>

Void main()

Char ch = ‘A’;

Printf(“%d”, ch | ‘A’ & ‘Z’);

Answer

Categories

Medium

Question Consider the following program

segment: int a=35;

int *b;

b= &a;

A. b contains address of an int

B. value at address contained in b is an int.

C. b is a pointer which points in the direction of an int.

D. all of the above

Answer

d. all of the above

Categories

Medium

Question

Predict the output:

#include<stdio.h>

#include<string.h>

int main()

printf(5 + “fascimile”);

return 0;

Answer

Output: mile

Categories

Medium

Question

Predict the output:

#define call(x) #x

void main(){

printf("%s",call(c/c++));

Answer

Categories

Medium

Question

In which header file is the NULL macro defined?

a. <stdio.h>

b. <stddef.h>

c. # define

d. All of the above

Answer

c. All of the above

Categories

Medium

Question

Predict the output:

#include<stdio.h>

int main()

int arr[12];

printf(“%d\n”, sizeof(arr));

return 0;

Answer

Output: 24

Categories

Medium

Questionstruct marks{

int p:3;

int c:3;

int m:2;

void main()

struct marks s={2,-6,5};

printf("%d %d %d",s.p,s.c,s.m);

Answer

2 2 12 2 1

Categories

Medium

Question

Is the NULL pointer same as an uninitialized pointer ?

a. Yes

Answer

Categories

Medium

Question

What is the current version of standard for c language was approved in December 2011?

Answer

Categories

Medium

Question

Predict the output:

void main(){

int a=25;

clrscr();

printf("%o %x",a,a);

getch();

Answer

Categories

Medium

Question

State true or false:

Multiplication of a pointer and an unsigned integer is allowed

a. True

b. false

Answer

b. False

Categories

Medium

Question

• In which numbering system can the binary number 1011011111000101 be easily converted to?

A. Decimal system

B. Hexadecimal system

C. Octal system

D. No need to convert

Answer

Hexadecimal system

Categories

Medium

Question

Predict the output:

void main()

int a=-12;

a=a>>3;

printf("%d",a);

Answer

Categories

Medium

Question

Does mentioning the array name gives the base address in all the contexts?

a. Yes

Answer

Categories

Medium

Question

• What is the difference between #include <> and #include “ ” ?

Answer

#include <> ---- > specifically used for built in header file.

#include ” ” ----->specifically used for user defined/created n header files.

Categories

Medium

Question

Assuming, integer is 2 byte, What will be the output of the program?

#include<stdio.h>

int main()

printf("%x\n", -1>>1);

return 0;

Answer

Categories

Medium

Question

A pointer to a block of memory is effectively same as the array

a. True

b. False

Answer

a. True

Categories

Medium

Question

Find the ERROR:

void main()

int const * p=5;

printf("%d",++(*p));

Answer

Compiler error: Cannot modify a constant value.

Categories

Medium

Question

Predict the output:

#include "string.h"

void main(){

clrscr();

printf("%d%d",sizeof("string"),strlen("string");

getch();

Answer

Categories

Medium

Question What does the following

declaration mean:

a. index of the pointer variable

b. memory location as 10

c. ptr is a pointer to an array of 10 integers

d. none of the above

Answer

c. ptr is a pointer to an array of 10 integers

Categories

Medium

Question

Two different operators would always have different Associativity.

A. Yes B. No

Answer

Categories

Medium

#include<stdio.h>

void main()

int i;

For(i=0;i++<10;)

Printf(“%d\n”,i);

Answer

Categories

Medium

Question

Predict the output:

#include<stdio.h>

int main()

printf(“%c”, “abcdefgh”[4]);

return 0;

Answer

Categories

Medium

Question

• Data written into a file using fwrite() can be read back using fscanf()

A. True B. False

Answer

Categories

Medium

Question

What the following code will display?

void main()

printf("%s",__DATE__);

Answer

Current system DATE

Categories

Medium

Question

Predict the output:

#include<stdio.h>

int main()

char str[7] = “strings”;

printf(“%s\n” , str);

return 0;

Answer

Output: cannot predict

Categories

Medium

QuestionWhat do the functions atoi()?

A. is a macro that converts integer to character.

B. It converts an integer to string

C. It converts a floating point number to string

Answer

is a macro that converts integer to character

Categories

Medium

void main()

printf("%s","c" "question" "bank");

A. c question bank

B. bank

C. cquestionbank

D. Compiler error

Answer

cquestionbank

Categories

Medium

Question Would the following code

compile successfully?

# include<stdio.h>

int main()

printf(“%c”, 7[“sundaram”]);

return 0;

Answer

Ans: Yes

Categories

Medium

Question

Give the output:

main(){#define a 50printf("%d",a);}

Answer

Categories

Medium

QuestionGive the output:

void main(){

char *str="c-pointer";

printf("%*.*s",10,7,str);

(a. c-pointer

b. c-pointer

c. c-point

d. cpointer null null

Answer

c-point

Categories

Medium

Question

Which of the following statements are correct about the program?

#include<stdio.h>

int main()

printf("%p\n", main());

return 0;

Answer

It prints garbage values infinitely

Categories

Medium

Question• Find the error:typedef struct

int data;

NODEPTR link;

}*NODEPTR;

Answer

Error: typedef cannot be used until is define

Categories

Medium

Question

• Predict the output:

#include<stdio.h>

void main()

int i;

For(i=0;++i<=10;)

Printf(“%d\n”,i);

Answer

Categories

Medium

QuestionPredict the output: #include<stdio.h>

#include<string.h>

Int main

Char str1[]=“learn through IndiaBIX\0.com”, str2[120];

Char *p;

P=(char*)memccpy(str2,str1,’I’,strlen(str1));

*p=‘\0’;

Printf(“%s”,str2);

Return 0;}

Answer

“learn through indi”

Categories

Medium

Question

State true or false:

• In place of the condition in a while loop structure there can be any other valid expression

Answer

Categories

Medium

Question

Predict the output:

#include<stdio.h>

Void main()

Char arr[7]=“NETWORK”;

Printf(“%s”,arr);

Answer

Garbage value

Categories

Medium

Question

• What does the above flowchart shows?

Initialize

Body of loop

increement

Answer

Shows the flowchart of FOR LOOP

Categories

Medium

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