Programming 1

1.

1 point

What is the output of this C code?

#include

void main()

{

int y = 3;

int x = 5 % 2 * 3 / 2;

printf("Value of x is %d", x);

}

Value of x is 1

c) Value of x is 3

b) Value of x is 2

d) Compile time error

2.

1 point

Which of the following declaration is illegal?

d) char[] str = “Best C programming classes by Ms. Aida Tuazon”;

c) char str[20] = “Best C programming classes by Ms. Aida Tuazon”;

a) char *str = “Best C programming classes by Ms. Aida Tuazon”;

b) char str[] = “Best C programming classes by Ms. Aida Tuazon”;

3.

1 point

Is there any difference between following declarations?
1 : extern int fun();
2 : int fun();

int fun(); is overrided with extern int fun();

No difference, except extern int fun(); is probably in another file

None of these

Both are identical

4.

1 point

Which of the following is not a valid variable name declaration?

b) int __3a;

c) int __A3;

None of these

a) int __a3;

5.

1 point

What is the output of this C code?

#include

void main()

{

int b = 5 - 4 + 2 * 5;

printf("%d", b);

}

d) None of the mentioned

c) 11

b) -5

a) 25

6.

1 point

The name of the variable used in one function cannot be used in another function

a) True

c) May be

d) None of the mentioned

b) False

7.

1 point

What will be output if you will compile and execute the following c code?

#include
int main(){
char *str;
scanf("%[^\n]",str);
printf("%s",str);
return 0;
}

(a)It will accept a word as a string from user.

(c)It will accept a paragraph as a string from user.

(b)It will accept a sentence as a string from user.

(d)Compiler error

8.

1 point

Which of the following is not a valid variable name declaration?

a) int _a3;

c) int 3_a;

b) int a_3;

d) int _3a

9.

1 point

Which is NOT a statement?

c) 4;

a) int x; a) int x; a) int x;

b) ;

d) 0xF;

10.

1 point

What is the output of this C code?

#include

void main()

{

int x = 5.3 % 2;

printf("Value of x is %d", x);

}

a) Value of x is 2.3

d) Compile time error

c) Value of x is 0.3

b) Value of x is 1

11.

1 point

Operation “a = a * b + a” can also be written as:

b) (c = a * b)!=(a = c + a);

a) a *= b + 1;

d) All of the mentioned

c) a = (b + 1)* a;

12.

1 point

Which of the following is not user defined data type?
1 :

struct book
{
char name[10];
float price;
int pages;
};

2 :

long int l = 2.35;

3 :

enum day {Sun, Mon, Tue, Wed};

1

1 and 2

2

3

13.

1 point

What punctuation is used to signal the beginning and end of code blocks?

D. ( and )

A. { }

B. -> and <-

C. BEGIN and END

14.

1 point

By default a real number is treated as a

long double

far double

float

double

15.

1 point

Which of the following operators represent the logical AND?

&&

&

|

||

16.

1 point

What punctuation ends most lines of C code?

:

;

.

'

17.

1 point

Which of the following is the correct operator to compare two variables?

D. ==

B. =

A. :=

C. equal

18.

1 point

Which of the following is not a valid C variable name?

c) int variable_count;

int number;

d) int $main;

b) float rate;

19.

1 point

What is the output of the code given below?

#include

int main()

{

int ary[4] = {1, 2, 3, 4};

int *p = ary + 3;

printf("%d\n", p[-2]);

}

1

Compile time error

None of These

2

20.

1 point

Which of the following is used to compare the variables?

:=

=

==

None of above

21.

1 point

What is the only function all C programs must contain?

program()

None of above

system()

main()

22.

1 point

Which of the following cannot be checked in switch case statement?

a) Int

c) enum

b) char

d) float

23.

1 point

Which of the following shows the correct syntax for an if statement?

C. if ( expression )

D. expression if

A. if expression

B. if { expression

24.

1 point

Which of the following special symbol allowed in a variable name?

* (asterisk)

- (hyphen)

| (pipeline)

_ (underscore)

25.

1 point

A variable declared in a function can be used in main

b) False

c) True if it is declared static

d) None of the mentioned

a) True