MCQ Set 1 - C
- 1.
What is the output of the following 'C' program? main ( ) { extern int i; i = 20; print ( "% d'', sizeof(i)); }
- A.
2
- B.
4
- C.
Would vary from compiler to compiler
- D.
Error, i undefined
Correct Answer
D. Error, i undefined -
- 2.
Consider the following program: main ( ) { int x = 2, y = 5; if (x < y) return (x = x + y); else print f("zl"); print f("z2"); } Then
- A.
Output is z2
- B.
Output is z1z2
- C.
This will result in compilation error
- D.
None of these
Correct Answer
D. None of theseExplanation
Return always terminates the function that executed it. main ( ) being a function, will be terminated when it executes the return statement. The return value will be returned to the calling environment, which is the operating system in this case.Rate this question:
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- 3.
What is the output of the following 'C' program? main ( ) { int a [5] = {2, 3}; print f (''\n % d % d % d'', a [2], a [3], a [4]); }
- A.
Garbage values
- B.
2 3 3
- C.
3 2 2
- D.
0 0 0
Correct Answer
D. 0 0 0 -
- 4.
What is the output of the following 'C' program? main ( ) { int i = 2; print f (''\n % d % d'', + + i, + + i); }
- A.
3 4
- B.
4 3
- C.
4 4
- D.
Output may vary from compiler to compiler
Correct Answer
D. Output may vary from compiler to compiler -
- 5.
What is the output of the following 'C' program? main ( ) { int x = 10, y = 10, z = 5, i; i = x <y <z; printf ("\n % d'', i); }
- A.
1
- B.
0
- C.
Error
- D.
5
Correct Answer
A. 1 -
- 6.
In the following 'C' code in which order the functions would be called? a = (f 1 (23, 14) * f 2 (12 / 4) + f 3 ( ));
- A.
F1, f2, f3
- B.
F3, f2, f1
- C.
The order may vary from compiler to compiler
- D.
None of these
Correct Answer
A. F1, f2, f3 -
- 7.
What is the output of the following 'C' program? main { Float a = 0. 7; if (a < 0.7) print f (''C''); else print f ('' C + + ''); }
- A.
C
- B.
C++
- C.
Error
- D.
None of the above
Correct Answer
C. Error -
- 8.
What is the output of the following 'C' program? main ( ) { printf ('' % f '', sqrt (36.0)); }
- A.
6.0
- B.
6.000000
- C.
6
- D.
Some absurd result
Correct Answer
B. 6.000000 -
- 9.
We want to round off x, a float, to an int value. What is the correct way to do so?
- A.
Y = (int) (x + 0.5);
- B.
Y = int (x +0.5);
- C.
Y = (int) x + 0.5;
- D.
Y = (int (int) x + 0.5;
Correct Answer
A. Y = (int) (x + 0.5); -
- 10.
By default any real number in 'C' is treated as
- A.
A float
- B.
A double
- C.
A long double
- D.
Depends upon the memory model that you are using
Correct Answer
B. A double -
- 11.
What is the output of the following 'C' program? main ( ) { printf (''% d % d % d", sizeof(3.14 f), sizeof (3.14), sizeof (3.14 l)); }
- A.
4 4 4
- B.
4 Garbage value
- C.
4 8 10
- D.
Error
Correct Answer
C. 4 8 10 -
- 12.
The following program main ( ) { static int a { } = {7, 8, 9}; print f("%d", a {2} = 2 [a] + A [2]; }
- A.
Results in bus error
- B.
Results in segmentation violation error
- C.
Will not compile successfully
- D.
None of these
Correct Answer
D. None of theseExplanation
a [2] will be converted to * (a + 2)
* (a + 2) can sas well be written as * (2 + a)
* (2 + a) is nothing but 2 [a]. So, a [2] is sam eas 2 [a], which is same as * (2 + a). So, it prints 9 + 9 = 18Rate this question:
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- 13.
What is the output of the following 'C' program? main { printf (''%c'', ''abcdefgh'' [4]);}
- A.
Error
- B.
D
- C.
E
- D.
Abcdefgh
Correct Answer
C. E -
- 14.
What is the output of the following 'C' program? main ( ) { char str [7] = ''strings''; print ('' % c ''; str); }
- A.
Error
- B.
Strings
- C.
Cannot predict
- D.
None of these
Correct Answer
C. Cannot predict -
- 15.
Which header file should you include if you are to develop a function that can accept variable number of arguments?
- A.
Vararg. h
- B.
Stadlib. h
- C.
Stdio. h
- D.
Stdarg. h
Correct Answer
D. Stdarg. h -
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Mar 20, 2022Quiz Edited by
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Jul 29, 2010Quiz Created by
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