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1000+ C Programming Multiple Choice Question Answer [Solved]

Thursday 9th of March 2023

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1. The printf() function retunes which value when an error occurs?
A. Positive value
B. Zero
C. Negative value
D. None of these
Answer : C
2. What will be output if you will compile and execute the following c code?
#include 
int main()
{     
float a=5.2;   
if(a==5.2)       
printf("Equal");    
else if(a<5.2)       
printf("Less than");    
else 
printf("Greater than");  
return 0;
}

A. Less than
B. Equal
C.

Greater than


D. None of above
Answer : A
3. The output of the following code is: 
main() 
{ 
void msg() 
{ 
printf("HELLO WORLD"); 
} 
}
A. HELLO WORLD
B. Error
C. None of the above
D. Null
Answer : B
4. 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
5. The array 'char name[10] can consist of a maximum of 9 characters.
A. True
B. False
C.
D.
Answer : A
6. The value of an enumerated datatype can be read using scanf() function.
A. True
B. False
C.
D.
Answer : B
7. Which of the following is not a preprocessor directive
A. #if
B. #elseif
C. #undef
D. #pragma
Answer : B
8. Character data types cannot be declared as unsigned.
A. True
B. False
C.
D.
Answer : B
9. Which of the following correctly describes C++ language?
A. Statically typed language
B. Dynamically typed language
C. Both Statically and dynamically typed language
D. Type-less language
Answer : D
10. The same variable names of automatic type can be used in different functions without any conflict.
A. True
B. False
C.
D.
Answer : A
11. 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
Answer : D
12. 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
Answer : C
13. 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
Answer : D
14. gets() and puts() are unformatted I/O functions.
A. True
B. False
C.
D.
Answer : A
15. The expression "b = 3 ^ 2;" will evaluate b = 9.
A. True
B. False
C.
D.
Answer : B
16. A multidimensional array A[10][9] can store-------- number of elements
A. 91
B. 88
C. 90
D. 89
Answer : C
17. fopen() function returns a pointer to the open file.
A. True
B. False
C.
D.
Answer : A
18. The identifier argv[] is a pointer to an array of strings.
A. True
B. False
C.
D.
Answer : B
19. Which of the following is an example of compounded assignment statement?
A. a = 5
B. a += 5
C. a = b = c
D. a = b
Answer : C
20. Only one break can be used in one loop.
A. True
B. False
C.
D.
Answer : B
21. unsigned char has a range from 0 to ------------
A. 253
B. 254
C. 255
D. 256
Answer : C
22. Nested macros are allowed.
A. True
B. False
C.
D.
Answer : B
23. do-while loop is useful when we want the statements within the loop must be executed
A. Only once
B. At least once
C. More than Once
D. Any one of the above
Answer : B
24. 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
25. 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
26. 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
27. 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
28. An array declared as A[100][100] can hold a maximum of 100 elements.
A. True
B. False
C.
D.
Answer : B
29. 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
30. The default initial value of automatic storage class is 0.
A. True
B. False
C.
D.
Answer : B
31. 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
32. Right shifting an operand 1bit is equivalent to multiplying it by 2.
A. True
B. False
C.
D.
Answer : B
33. 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
34. 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
35. unsigned' is a valid variable name.
A. True
B. False
C.
D.
Answer : B
36. 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
37. 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
38. 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
39. Which of the following expressions is wrong
A. float a =123.56;
B. char ch ='T' * 'A';
C. char ch ='T' *20;
D. 3 +a = b;
Answer : D
40. 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
41. The output of the following code is: 
void main() 
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }
A. 3.999999
B. Error
C. 3
D. 3.000000
Answer : D
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. printf() is not a library function.
A. True
B. False
C.
D.
Answer : B
44. fprintf()function can be used to write into console.
A. True
B. False
C.
D.
Answer : B
45. The output of the following code is: 
main() 
{
int a[10], i; 
for (i = 1; I <= 0; i++) 
{
scanf("%d", a[i]); 
printf("%d", a[i]); 
}
}
A. 10
B. Logical error
C. Runtime error
D. 1 to 10 will be displayed
Answer : B
46. A continue statement causes execution to skip to
A. the return 0; statement
B. the first statement after the loop
C. the statement following the continue statement
D. the next iteration of the loop
Answer : C
47. 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
Answer : D
48. # define PI = 8;' is the correct declaration of macros.
A. True
B. False
C.
D.
Answer : B
49. All elements of a structure are allocated contiguous memory locations.
A. True
B. False
C.
D.
Answer : A
50. 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
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