C Programming Quiz

8/13/2019 C Programming Quiz

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Cover Page

C Programming

Language

Author: JavaChamp Team

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Table of Contents

Quiz Permalink: http://www.quizover.com/pdf/c-certification-questions

Author Profile: http://www.quizover.com/user/profile/Java.Champ

1. C Programming Language

Basics

Arithmetic operators

Logical operators and Conditions

Print out Statements

Flow Control

Inputs Reading

Assignement

Arrays

Methods and Functions

Identifiers and Variables

Data Types

Strings
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4. Chapter: Basics

1. Basics Questions


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4.1.1. Question: The C programming Language is

The C programming Language is

Please choose only one answer:

Low level language

High level language

Machine language


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4.1.2. Question: To include a header file in a C program:

To include a header file in a C program:


#include "stdio.h" ;

#include "stdio.h"

Both correct

Author: Yasser Ibrahim

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4.1.3. Question: the #include keyword in c language is:

the #include keyword in c language is:


executive c statement

compiler directive

both correct


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4.1.4. Question: To include a header file in a C program:

To include a header file in a C program:


#include "stdio.h"

#include

Both correct


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4.1.5. Question: The main() function is:

The main() function is:


to write output to the screen

the program entry point

Both correct


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4.1.6. Question: How to write comments in C language?

How to write comments in C language?


Use /* .. */ for multi-line comments

Use // for single-line comments

Both correct


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4.1.7. Question: The computer performs computations internally using

The computer performs computations internally using


Binary number system

Decimal number system

Hexadec. number system


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5. Chapter: Arithmetic operators

1. Arithmetic operators Questions


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5.1.1. Question: To compute the square of the value in variable a:

To compute the square of the value in variable a:


b = a^2;

z = a * a;

both correct


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5.1.2. Question: The value of z in the following statement:

int x = 9 , y = 2 , z...

The value of z in the following statement:

int x = 9 , y = 2 , z = x / y;


4

4.5

5


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5.1.3. Question: choose the proper function to compute the cubic value of any input ...

choose the proper function to compute the cubic value of any input integer n:


int cube(void) { return (n * n * n) ; }

int cube(int n) { return (n * n * n) ; }

void cube(int n) { return (n * n * n) ; }


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5.1.4. Question: what is the output of the following piece of code

what is the output of the following piece of code


3

4

5


int a = 1, b = 2, c;c = a-- + b--;printf(%d,c);

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5.1.5. Question: What is the output of the following piece of code?

What is the output of the following piece of code?


8

9

10


int x = 3, y = 5, z;z = x + ++y;printf(%d,z);

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5.1.6. Question: A short-cut for the statement: x = x + 1;

A short-cut for the statement: x = x + 1;


x += 1;

x++;

Both correct


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5.1.7. Question: what is the output of the following piece of code

int z = 23 % 3;

what is the output of the following piece of code

int z = 23 % 3;


7

2

30


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5.1.8. Question: To compute the cube of the value in variable x:

To compute the cube of the value in variable x:


c = x * x * x;

c = x^3;

Both correct


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5.1.9. Question: what is the output of the following piece of code:

what is the output of the following piece of code:


1

2

3


int c = 19 % 4;

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5.1.10. Question: printf("%f", sqrt(sqrt (x)));

printf("%f", sqrt(sqrt (x)));


is correct

has syntax error

causes run-time error


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5.1.11. Question: What is the output of the following piece of code:

What is the output of the following piece of code:


8

9

10


int x = 3, y = 5, z;z = ++x + ++y;printf(%d,z);

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5.1.12. Question: What is the output of the following piece of code?

What is the output of the following piece of code?


8

9

10


int x = 3, y = 5, z ;z = x++ + ++y;printf(%d,z);

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6. Chapter: Logical operators and Conditions

1. Logical operators and Conditions Questions


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6.1.1. Question: What is the result of compiling and running the following code?

What is the result of compiling and running the following code?


no output is produced

c is smaller than C

c is greater than C

compilation error


public static void main(String[] args) {

char c = 'c';String result = (c > 'C') ? "c is greater than C " : "c is smaller than C";System.out.print(result);

}

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6.1.2. Question: The operator = in the Boolean condition if( age = 3 )

The operator = in the Boolean condition if( age = 3 )


assignment operator

check for equality condition operator

both correct


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6.1.3. Question: what is the result of the condition ( x ;; y ) given the declaratio...

what is the result of the condition ( x ;; y ) given the declaration :

int x = 1 , y = 2 ;


false

unknown

true


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6.1.4. Question: consider the following statement:

if( 7 ) printf("CHECK");

consider the following statement:

if( 7 ) printf("CHECK");


the printf() statement will always be executed

the printf() statement will never be executed

Depends on the compiler


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6.1.5. Question: What is the result of the condition ( a ;; b ) given the following ...

What is the result of the condition ( a ;; b ) given the following declaration :


true

false

unknown


int a = 3 , b = 1 ;

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6.1.6. Question: the ; operator in the Boolean condition if( (x>5) ; ( y < 9 ) ) &h...

the ; operator in the Boolean condition if( (x>5) ; ( y < 9 ) )


bit-wise AND operator

address operator

logical AND operator


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6.1.7. Question: what is the result of the condition ( x ; y ) given the declaration...

what is the result of the condition ( x ; y ) given the declaration:

int x = 1 , y = 2 ;


true

unknown

false


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6.1.8. Question: To find the max value between x,y :

To find the max value between x,y :


if ( x > y ) max = x;

else max = y;

max = y;

if ( x > y ) max = x;

both correct


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no output

7

3


int x = 7;if ( x = 3 ) printf( %d , x);

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6.1.10. Question: if ( 16 = m ) printf("m is 16");

if ( 16 = m ) printf("m is 16");


is correct

has syntax error



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7. Chapter: Print out Statements

1. Print out Statements Questions


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7.1.1. Question: To write statement hi world:

To write statement hi world:


puts(hi world);

puts("hi world");

Both correct


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7.1.2. Question: To write the ASCII code of char ch=x;

To write the ASCII code of char ch=x;


printf("%d",ch);

putch(ch);

printf("%d", ascii(ch));


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7.1.3. Question: To write the value of x where:

double x = 0.12345;

To write the value of x where:

double x = 0.12345;


printf( "%lf " , x);

printf( "%f " , x);

printf( "%ld " , x);


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7.1.4. Question: To print character a:

To print character a:


putch("a");

putch(a);

Both correct


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7.1.5. Question: what is the best choice to print the value of variable x where:

...

what is the best choice to print the value of variable x where:

int x = 123;


printf("%d",x);

printf("%c",x);

printf("%f",x);


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7.1.6. Question: what is the best choice to print the value of variable y where:flo...

what is the best choice to print the value of variable y where:float y = 2.34;


printf("%d",y);

printf("%f",y);

printf("%c",y);


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7.1.7. Question: To write string char str[30] = "C Language";

What to use?

To write string char str[30] = "C Language";

What to use?


printf("%s",str);

puts(str);

Both correct


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8. Chapter: Flow Control

1. Flow Control Questions


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while ( 1 ) ;


while ( 1 ) ;


Infinite loop

Syntax error

Depends on the compiler


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One

Two

TwoThree


switch(2) {case 1: printf(One);break;case 2: printf(Two);break;case 3: printf(Three);break;}

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8.1.3. Question: To write character array

char mystr[50] = "string" , i = 0;

To write character array

char mystr[50] = "string" , i = 0;


len = strlen (mystr);

for ( i = 0 ; i < len ; i++ ) putch(mystr [i] );

for ( i = 0 ; i < 50 ; i++ ) putch(mystr [i] );

Both correct


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8.1.4. Question: for(j=63 , i < 95 , i +=3) x += sqrt(j);

for(j=63 , i < 95 , i +=3) x += sqrt(j);


is correct

has syntax error



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while ( 3 ) ;


while ( 3 ) ;


Infinite loop

Syntax error

Executes only 3 iterations


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Default

One

Two


switch(476) {case 1: printf(One);break;case 2: printf(Two);break;default: printf(Default);break;}

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8.1.7. Question: while (degree < 100 ); count+= degree;

while (degree < 100 ); count+= degree;


is correct and causes no runtime error

has syntax error



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8.1.8. Question: while (degree < 100 ) count+= degree++;

while (degree < 100 ) count+= degree++;


is correct

has syntax error



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One

Two

TwoThree


switch(2) {case 1: printf(One);break;case 2: printf(Two);case 3: printf(Three);break;}

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9. Chapter: Inputs Reading

1. Inputs Reading Questions


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9.1.1. Question: To get a statement from the user input in the array char s[100]:

To get a statement from the user input in the array char s[100]:


gets( s[100] );

gets( s[] );

gets( s );


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9.1.2. Question: To get a statement from the user input in the array

char s[100] :

To get a statement from the user input in the array

char s[100] :


gets( s );

scanf( "%s", s );

Both correct


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9.1.3. Question: scanf("%d", ;time);

scanf("%d", ;time);


is correct

has syntax error



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9.1.4. Question: what is the best choice to input the value of variable c where:cha...

what is the best choice to input the value of variable c where:char c;


scanf("%d", ;c);

scanf("%f", ;c);

scanf("%c", ;c);


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10. Chapter: Assignement

1. Assignement Questions


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10.1.1. Question: To assign the value of integer x into character ch where:

int x =...

To assign the value of integer x into character ch where:

int x = 5; char ch;


ch = x;

ch = ascii(x);

x = ch;


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11. Chapter: Arrays

1. Arrays Questions


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11.1.1. Question: To declare and initialize character array:

To declare and initialize character array:


char s[] = { a, b , c };

char s[] = "abc";

both correct


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11.1.2. Question: To declare and initialize character array :

To declare and initialize character array :


char s[] = { a, b , c };

char s[] = "abc";

both correct


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11.1.3. Question: float values(200) = ( 1 , 2 , 3 , 4 );

float values(200) = ( 1 , 2 , 3 , 4 );


is correct

has syntax error



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11.1.4. Question: float values(200) = ( 1 , 2 , 3 , 4 );

float values(200) = ( 1 , 2 , 3 , 4 );


correct

syntax error

run-time error


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12. Chapter: Methods and Functions

1. Methods and Functions Questions


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12.1.1. Question: what is the output of the following program

what is the output of the following program


Unknown (random value)

Zero

3000


main(){int x;printf(%d,x);}

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12.1.2. Question: int multiply(int x, int y) {

return x*y;

}

int multiply(int x, int y) {

return x*y;

}


is correct

has syntax error



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12.1.3. Question: What is the output of the following program:

What is the output of the following program:


5

7

unknown


int change( int x ) {x = 7; return(x);}

main(){int x = 5;change(x);printf(%d,x);}

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12.1.4. Question: What is the output of the following program:

What is the output of the following program:


8unknown

both wrong


int sum( int x, int y ) {return (x + y);}

main(){int x = 5 , y = 3;printf(%d, sum(x,y));}

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8

unknown

both wrong


int sum( int x, int y ) {int z = x + y;}main(){int x = 5 , y = 3;printf(%d, sum(x,y));}

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5

7

unknown


int change( int x ) {x = 7;}

main(){int x = 5;change(x);printf(%d,x);}

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13. Chapter: Identifiers and Variables

1. Identifiers and Variables Questions


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13.1.1. Question: Which of the following identifiers is a legal identifier:

Which of the following identifiers is a legal identifier:


my mark

my_mark

my-mark


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13.1.2. Question: consider the following variables declaration statement:

int age,...

consider the following variables declaration statement:

int age, AGE;


Correct statement, the compiler uses age and AGE as completely different variables.

Correct statement, the compiler uses age and AGE as the same variable.

Wrong statement, because you cant declare more than one variable with the same name.


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13.1.3. Question: To define a constant ABC with value 358:

To define a constant ABC with value 358:


#define ABC = 358

#define ABC = 358 ;

#define ABC 358


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13.1.4. Question: The variables in C programming language:

The variables in C programming language:


Must be declared before being used.

Can be used without declaration

Can be used before declaration


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13.1.5. Question: What is the role of variables in programming languages:

What is the role of variables in programming languages:


Perform standard functions like printing to the screen

Data storage

Both correct


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13.1.6. Question: Which of the following identifiers is a legal identifier?

Which of the following identifiers is a legal identifier?


abc#*

#+abc

abc


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13.1.7. Question: Which of the following identifiers is a legal identifier :

Which of the following identifiers is a legal identifier :


1abc

abc 1

abc1


Check the answer of this question online on QuizOver.com:Question: lega Identifier rules in CPermalink: http://www.quizover.com/pdf/lega-identifier-rules-in-c
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14. Chapter: Data Types

1. Data Types Questions


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14.1.1. Question: If MSB of a binary number is "0" then it is:

If MSB of a binary number is "0" then it is:


Odd number

Even number

Positive number


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14.1.2. Question: what is the best choice to store the number of university students:

what is the best choice to store the number of university students:


char n = 20000;

float n = 20000;

int n = 20000;


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14.1.3. Question: If LSB of a binary number is "0" then it is:

If LSB of a binary number is "0" then it is:


Positive number

Even number

Odd number


Check the answer of this question online on QuizOver.com:Question: LSB in CPermalink: http://www.quizover.com/pdf/lsb-in-c
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14.1.4. Question: The highest digit in any number system equals:

The highest digit in any number system equals:


Zero

Base - 1

Base + 1


Check the answer of this question online on QuizOver.com:Question: max value in number systemPermalink: http://www.quizover.com/pdf/max-value-in-number-system
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14.1.5. Question: what is the storage size of the float data type (float)?

what is the storage size of the float data type (float)?


1 byte

2 byte

4 byte


Check the answer of this question online on QuizOver.com:Question: float storage size in CPermalink: http://www.quizover.com/pdf/float-storage-size-in-c
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14.1.6. Question: what is the best choice to store the natural number PI = 3.1459

what is the best choice to store the natural number PI = 3.1459


int pi = 3.1459;

char pi = 3.1459;

float pi = 3.1459;


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14.1.7. Question: what is the storage size of the integer data type (char)?

what is the storage size of the integer data type (char)?


1 byte

2 byte

4 byte


Check the answer of this question online on QuizOver.com:Question: char storage size in CPermalink: http://www.quizover.com/pdf/char-storage-size-in-c
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14.1.8. Question: what is the storage size of the float data type (int)?

what is the storage size of the float data type (int)?


1 byte

2 byte

4 byte


Check the answer of this question online on QuizOver.com:Question: int storage size in CPermalink: http://www.quizover.com/pdf/int-storage-size-in-c
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14.1.9. Question: to assign the value of integer x into character ch where:

int x = ...

to assign the value of integer x into character ch where:

int x = 5;

char ch;


ch = x;

ch = ascii(x);

x = ch;


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15. Chapter: Strings

1. Strings Questions


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15.1.1. Question: To copy a string into another, given:

char s1[30] = "xyz", s2[20];

To copy a string into another, given:

char s1[30] = "xyz", s2[20];


s2 = s1;

strcpy(s2,s1);

Both wrong


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96/96

15.1.2. Question: to concatenate two strings into third string, given :

char s1[30] ...

to concatenate two strings into third string, given :

char s1[30] = "hi", s2[20] = "world", s3[10];


s3 = s1 + s2;

strcpy(s3,s1);strcat(s3,s2);

s3 = strcat(s1,s2);


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