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What is the correct answer?

4

In the expression - 'x + y + 3z =20'

A. x + y' is a keyword

B. 3 and 20 are constants

C. 3z is a constant

D. y is a variable and z is a constant

Correct Answer :

B. 3 and 20 are constants


Related Questions

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4

Which among the following is a unconditional control structure

A. do-while

B. if-else

C. goto

D. for

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4

All macro substitutions in a program are done before compilation of the program.

A. True

B. False

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4

The output of the following code is:
void main()
{
int z, a = 5, b = 3; z = a * 2 + 26 % 3;
printf("%d", z); }

A. 10

B. 0

C. 12

D. None of the above

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4

What's wrong? (x = 4 && y = 5) ? (a = 5) ; (b = 6);

A. the question mark should be an equal sign

B. the first semicolon should be a colon

C. there are too many variables in the statement

D. the conditional operator is only used with apstrings

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4

Which of the following is not a preprocessor directive

A. #if

B. #elseif

C. #undef

D. #pragma

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4

The array 'char name[10] can consist of a maximum of 9 characters.

A. True

B. False

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4

------ is the ternary operator

A. ?,-

B. ?,:

C. ++<--

D. none of the above

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4

What is right way to Initialization array?

A. int num[6] = { 2, 4, 12, 5, 45, 5 } ;

B. int n{} = { 2, 4, 12, 5, 45, 5 } ;

C. int n{6} = { 2< 4< 12 } ;

D. int n(6) = { 2, 4, 12, 5, 45, 5 } ;

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4

The-------------------- statement helps immediate exit from any part of the loop

A. break

B. continue

C. exit

D. All of the above

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4

enum helps to create user defined datatype.

A. True

B. False

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4

Operation between an integer and float always yields a float result.

A. True

B. False

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4

The output of the following code is:
void main() 
{
int a = 1, b=2;
int *ip;
ip=&a;
b=*ip;
printf("%d", b);
}

A. 2

B. 1

C. 100

D. 0

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4

Which of the following is not a standard exception built in C++.

A. std::bad_creat

B. std::bad_alloc

C. std::bad_cast

D. std::bad_typeid

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4

emp name' is a valid variable name.

A. True

B. False

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4

A function to be called must be ended with a----------------

A. .

B. ?

C. ;

D. none of the above

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4

All elements of a structure are allocated contiguous memory locations.

A. True

B. False

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4

printf() is not a library function.

A. True

B. False

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4

char *s[10] defines an array of ------------------------

A. pointers to strings

B. string to pointer

C. both

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4

In the expression - 'x + y + 3z =20'

A. x + y' is a keyword

B. 3 and 20 are constants

C. 3z is a constant

D. y is a variable and z is a constant

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4

The same variable names of automatic type can be used in different functions without any conflict.

A. True

B. False

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4

The output of the following code is:
void main() 
{
char a = 'B';
switch (a)
{
case 'A' : printf("a");
case 'B' : printf("b");
default : printf("c");
}

A. B

B. b

C. bca

D. bc

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4

The output of the following code is:
main() 
{
int a = 5, b = 6;
(a == b? printf("%d", a));
}

A. 0

B. 5

C. Error

D. None of the above

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4

A declaration float a, b; occupies ___ of memory

A. 1 byte

B. 4 bytes

C. 8 bytes

D. 16 bytes

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4

Which one of the following is not a valid reserved keyword in C++

A. Explicit

B. Public

C. Implicit

D. Private

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4

continue statement is used

A. to go to the next iteration in a loop

B. come out of a loop

C. exit and return to the main function

D. restarts iterations from beginning of loop

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4

gets() and puts() are unformatted I/O functions.

A. True

B. False

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4

For 16bit compiler allowable range for integer constants is ______ ?

A. 3.4e38 to 3.4e38

B. 32767 to 32768

C. 32768 to 32767

D. 32668 to 32667

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4

What is Keywords?

A. Keywords have some predefine meanings and these meanings can be changed.

B. Keywords have some unknown meanings and these meanings cannot be changed.

C. Keywords have some predefine meanings and these meanings cannot be changed.

D. None of the above

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4

The output of the following code is:
main() 
{
int sub[50];
for(i=0; i<=48;i++)
{
sub[i]=i;
printf("
%d", sub[i]);
}
}

A. 0 to 48 will be displayed

B. 48

C. 49

D. Compilation Error

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4

What would be the output of the following program?
int x=40;
main(){
int x=20;
printf("
%d",x);
}

A. 40

B. 20

C. Compilation Error

D. Garbeg Value