Home

RRB ALP - C Programming 1000+ MCQ [Solved] PDF Download

Thursday 9th of March 2023

Sharing is caring

Downlaod C Programming MCQ PDF
1. C programs are converted into machine language with the help of
A. An Editor
B. A compiler
C. An operating system
D. None of the above
Answer : B
2. p++ executes faster than p + 1.
A. True
B. False
C.
D.
Answer : A
3. The output of the following code is: 
#define sqr(x= x*x) 
main() 
{
int a = 10, b = 5; 
printf("%d, %d", sqr(a+b),sqr(++a));
}
A. 77, 121
B. 225, 121
C. 77< 144
D. Compilation error
Answer : D
4. The expression "int i = j = k = 0;" is invalid.
A. True
B. False
C.
D.
Answer : A
5. Union is used to hold different data at different time.
A. True
B. False
C.
D.
Answer : A
6. Which options shows the correct hierarchy of arithmetic operators
A. **, * or /, + or -
B. **, *, /, +, -
C. **< /< *< +<-
D. / or *, - or +
Answer : D
7. perror( ) function used to ?
A. Work same as printf()
B. prints the error message specified by the compiler
C. prints the garbage value assigned by the compiler
D. None of the above
Answer : B
8. When a user defined function is defined in program, then it has to be called at least once from the main().
A. True
B. False
C.
D.
Answer : B
9. Single operations involving entire arrays are permitted in C.
A. True
B. False
C.
D.
Answer : A
10. Which of the following shows the correct hierarchy of arithmetic operations in C
A. / + * ?
B. * ? / +
C. + ? / *
D. * / + -
Answer : D
11. 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
Answer : C
12. All macro substitutions in a program are done before compilation of the program.
A. True
B. False
C.
D.
Answer : A
13. A recursive function calls itself again and again.
A. True
B. False
C.
D.
Answer : A
14. The output of the following code is: 
main() 
{ 
int k, num = 30; 
k = (num > 5 ? (num <= 10 ? 100 : 200) : 500); 
printf("
%d", num); 
}
A. 200
B. 500
C. 30
D. Unpredictable
Answer : C
15. If the class name is X, what is the type of its “this” pointer (in a nonstatic, non-const member function)?
A. const X* const
B. X* const
C. X*
D. X&
Answer : D
16. What's wrong? while( (i < 10) && (i > 24))
A. the logical operator && cannot be used in a test condition
B. the while loop is an exit-condition loop
C. the test condition is always true
D. the test condition is always false
Answer : D
17. unsigned char has a range from 0 to ------------
A. 253
B. 254
C. 255
D. 256
Answer : C
18. Which of the following is invalid?
A. ''
B. " "
C. 'a'
D. abc'
Answer : D
19. Which of the following is not a preprocessor directive
A. #if
B. #elseif
C. #undef
D. #pragma
Answer : B
20. No commas or blanks are allowed within an integer or a real constant.
A. True
B. False
C.
D.
Answer : A
21. The contents of a file opened in 'r+' mode cannot be changed.
A. True
B. False
C.
D.
Answer : B
22. There are total ------ numbers of operators in 'C'.
A. 35
B. 45
C. 55
D. 40
Answer : B
23. strcat() function ----------------------- two strings.
A. delete
B. concatenate
C. compare
D. none of the above
Answer : B
24. An array declared as A[100][100] can hold a maximum of 100 elements.
A. True
B. False
C.
D.
Answer : B
25.

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


#include 
#define x 5+2 
int main(){     
int i;     
i=x*x*x;     
printf("%d",i);      
return 0;  
}



A. 27
B. 343
C. 233
D. Compiler Error
Answer : A
26. The output of the following code is: 
main() 
{ 
unsigned int a = 10; 
while (a>=10) 
{ 
int a; a-- ; 
} 
printf("%i", a); 
}
A. Infinite loop
B. 9
C. 0
D. None
Answer : A
27. static variable will not always have assigned value.
A. True
B. False
C.
D.
Answer : A
28. A multidimensional array A[10][9] can store-------- number of elements
A. 91
B. 88
C. 90
D. 89
Answer : C
29. Only one break can be used in one loop.
A. True
B. False
C.
D.
Answer : B
30. Which one of the following is not a valid reserved keyword in C++
A. Explicit
B. Public
C. Implicit
D. Private
Answer : C
31. The main() function can be called from any other function.
A. True
B. False
C.
D.
Answer : A
32. How many times the following loop will execute?
for (a = 0; a < 4; a++)
printf("hello
");
A. 3
B. 4
C. 5
D. infinite
Answer : B
33. 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
Answer : D
34. A C variable cannot start with
A. An alphabet
B. A number
C. A special symbol other than underscore
D. both (b) and (c)
Answer : D
35. gets() and puts() are unformatted I/O functions.
A. True
B. False
C.
D.
Answer : A
36. What is the difference between overloaded functions and overridden functions?
A. Overloading is a dynamic or run-time binding and Overriding is static or compile-time binding
B. Redefining a function in a friend class is called function overriding while Redefining a function in a derived class is called a overloaded fucntion.
C. Overloading is a static or compile-time binding and Overriding is dynamic or run-time binding
D. Redefining a function in a friend class is called function overloading while Redefining a function in a derived class is called as overridden fucnion.
Answer : B
37. the value *(&i) is same as printing the value of address of i.
A. True
B. False
C.
D.
Answer : B
38. The output of the following code is: 
main() 
{ 
xyz: goto abc;
printf("Hello"); 
abc: printf("World");
goto xyz;
}
A. Infinite loop
B. Hello World
C. World Hello
D. Compilation error
Answer : A
39. C programming language was developed by
A. Dennis Ritchie
B. Ken Thompson
C. Bill Gates
D. Peter Norton
Answer : A
40. Right shifting an operand 1bit is equivalent to multiplying it by 2.
A. True
B. False
C.
D.
Answer : B
41. The-------------------- statement helps immediate exit from any part of the loop
A. break
B. continue
C. exit
D. All of the above
Answer : A
42. Which of the following is a valid destructor of the class name "Country"
A. int ~Country()
B. void Country()
C. int ~Country(Country obj)
D. void ~Country()
Answer : B
43. Expression 4**3 evaluates to 64.
A. True
B. False
C.
D.
Answer : B
44. The statement "for (i = 0, j = 2; j <= 10; j++)" is a valid statement in 'C'.
A. True
B. False
C.
D.
Answer : A
45. fprintf()function can be used to write into console.
A. True
B. False
C.
D.
Answer : B
46. Which of the following is not true about preprocessor directives
A. They begin with a hash symbol
B. They are processed by a preprocessor
C. They form an integral part of the code
D. They have to end with a semi colon
Answer : A
47. For 16?bit 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
Answer : C
48. 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
Answer : C
49. The expression 'int j = 6 + 3 % -9;' evaluates to -1.
A. True
B. False
C.
D.
Answer : B
50. Each pass through a loop is called a/an
A. enumeration
B. iteration
C. culmination
D. pass through
Answer : C
Downlaod C Programming MCQ PDF

Sharing is caring

Related Post