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1000+ C Programming Multiple Choice Question Answer [Solved]

Thursday 9th of March 2023

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1. 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
2. What will be output if you will compile and execute the following c code? 
#include 
int main(){    
int i=320;    
char *ptr=(char *)&i;    
printf("%d",*ptr);     
return 0; 
}

A. 1
B. 64
C. 320
D. Compiler Error
Answer : B
3. No commas or blanks are allowed within an integer or a real constant.
A. True
B. False
C.
D.
Answer : A
4. 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
5. C programming language was developed by
A. Dennis Ritchie
B. Ken Thompson
C. Bill Gates
D. Peter Norton
Answer : A
6. unsigned' is a valid variable name.
A. True
B. False
C.
D.
Answer : B
7. A function to be called must be ended with a----------------
A. .
B. ?
C. ;
D. none of the above
Answer : C
8. What is C Tokens?
A. The smallest individual units of c program
B. The basic element recognized by the compiler
C. The largest individual units of program
D. A & B Both
Answer : D
9. fprintf()function can be used to write into console.
A. True
B. False
C.
D.
Answer : B
10. The default initial value of automatic storage class is 0.
A. True
B. False
C.
D.
Answer : B
11. void' is a datatype.
A. True
B. False
C.
D.
Answer : A
12. What is an array?
A. An array is a collection of variables that are of the dissimilar data type.
B. An array is a collection of variables that are of the same data type.
C. An array is not a collection of variables that are of the same data type.
D. None of the above.
Answer : B
13. A multidimensional array A[10][9] can store-------- number of elements
A. 91
B. 88
C. 90
D. 89
Answer : C
14. The array 'char name[10] can consist of a maximum of 9 characters.
A. True
B. False
C.
D.
Answer : A
15. = and = = have the same operation.
A. True
B. False
C.
D.
Answer : B
16. /* The C language.
/* is a procedural language .*/*/
The above statement is valid.
A. True
B. False
C.
D.
Answer : B
17. struct stud
{
int roll;
char name[20];
float marks;
} *p;
What will be the byte size of p?
A. 24
B. 2
C. 26
D. None
Answer : B
18. Which of the STL containers store the elements contiguously (in adjecent memory locations)?
A. std::vector
B. std::list
C. std::map
D. std::set
Answer : C
19. 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
20. the value *(&i) is same as printing the value of address of i.
A. True
B. False
C.
D.
Answer : B
21. 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
22. The output of the following code is: 
int f(int a, int b); 
void main() 
{
int a = 12, b=154; 
printf("%d", f(a, b)); 
}
int f(int a, int b) 
{
if (a<b) return(f(b, a));
if(b==0) return(a);
return (f(b, a % b));
}
A. 2
B. 1
C. Compilation error
D. Runtime error
Answer : A
23. The output of the following code is: 
void main() 
{
int a = 0; 
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a); 
}
A. a = 100
B. a = 50
C. compilation error
D. runtime error
Answer : A
24. The main() function can be called from any other function.
A. True
B. False
C.
D.
Answer : A
25. Which of the following is not an infinite loop
A. int i =1;
while (1)
{i++;}
B. for( ; ; );
C. int true=0< false;
while (true)
{false = 1;}
D. int y, x = 0;
do
{y = x;}
while (x==0);
Answer : C
26. Variables declared as register storage type gets stored in CPU registers.
A. True
B. False
C.
D.
Answer : A
27. 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
Answer : B
28. 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
29. Which classes allow primitive types to be accessed as objects?
A. Storage
B. Virtual
C. Friend
D. Wrapper
Answer : B
30. Character data types cannot be declared as unsigned.
A. True
B. False
C.
D.
Answer : B
31. What does STL stand for?
A. Simple Template Library
B. Standard Template Library
C. Static Type Library
D. Single Type-based Library
Answer : A
32. A pointer is an indication of the variable to be accessed next.
A. True
B. False
C.
D.
Answer : B
33. strcat() function ----------------------- two strings.
A. delete
B. concatenate
C. compare
D. none of the above
Answer : B
34. The same variable names of automatic type can be used in different functions without any conflict.
A. True
B. False
C.
D.
Answer : A
35. Which of the following is not a preprocessor directive
A. #if
B. #elseif
C. #undef
D. #pragma
Answer : B
36. Which of the following is invalid?
A. ''
B. " "
C. 'a'
D. abc'
Answer : D
37. 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
38. 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
Answer : B
39. unsigned char has a range from 0 to ------------
A. 253
B. 254
C. 255
D. 256
Answer : C
40. The output of the following code is: 
main() 
{
int a = 0; 
for (; i = 0; i++) 
printf("%d", a); 
}
A. 0
B. Nothing will be displayed
C. Infinite loop
D. None of the above
Answer : D
41. p++ executes faster than p + 1.
A. True
B. False
C.
D.
Answer : A
42. The output of the following code is: 
void main() 
{
int a; 
int &b = a;
a=100; 
printf("b=%d\ta=%d
", b,a);
}
A. b=100 a=100
B. b=100 a=0
C. b=0 a=100
D. Error
Answer : D
43. The main() function can call itself recursively.
A. True
B. False
C.
D.
Answer : A
44. emp name' is a valid variable name.
A. True
B. False
C.
D.
Answer : B
45. There are total ------ numbers of operators in 'C'.
A. 35
B. 45
C. 55
D. 40
Answer : B
46. Which among the following is a unconditional control structure
A. do-while
B. if-else
C. goto
D. for
Answer : C
47. Which of the following is allowed in a C Arithmetic instruction
A. []
B. {}
C. ()
D. None of the above
Answer : C
48. Which of the following is not recommended in a header file?
A. Type definitions (typedefs)
B. Class definitions
C. Function definitions
D. Template definitions
Answer : D
49. An array declared as A[100][100] can hold a maximum of 100 elements.
A. True
B. False
C.
D.
Answer : B
50. Union is used to hold different data at different time.
A. True
B. False
C.
D.
Answer : A
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