Fundamentals of Data Structure MCQ's Set-3
1] The value of eof is
a) -1
b) 1
c) 0
d) 10
ANSWER : A
2] Choose correct declaration
a) int main(intargc,char *argv) {}
b) int main(intargc,char *argv[]){}
c) int main(int *argc,char *argv){}
d) int main(){int *argc,char *argv}
ANSWER : D
3] How to call a function without using the function name to send parameters?
a) typedefs
b) Function pointer
c) Both (a) and (b)
d) None of the mentionedANSWER : B
4] Which of the following is the correct syntax to pass a Function Pointer as an argument ?
a) void pass(int (*fptr)(int, float, char)){}
b) void pass(*fptr(int, float, char)){}
c) void pass(int (*fptr)){}
d) void pass(*fptr){}ANSWER : A
5] Which of the following is not possible in C?
a) Array of function pointer
b) Returning a function pointer
c) Comparison of function pointer
d) None of the mentioned
ANSWER : D
6] What is the output of this C code?
#include
<stdio.h>
void first()
{
printf("Hello World");
}
void main()
{
void *ptr() =
first;
ptr++
ptr();
}
a) Illegal application of ++ to void data type
b) pointer function initialized like a variable
c) Both (a) and (b)
ANSWER : C
7] Identify invalid expression
a) &274
b) &(a+b)
c) &(a*b)
d) all
of the above
ANSWER : D
8] Pointers are supported in
a) C
b) Fortron
c) Pascal
d) Both b&cANSWER : D
9] Number of argument use in malloc is
a) 0
b) 1
c) 2
d) 3ANSWER : A
10] The no. Of argument use in realloc is
a) 0
b) 1
c) 2
d) 3
ANSWER : C
11] The function is use in dynamic deallocation is
a) Destroy()
b) Delet()
c) Free()
d) Remove()
ANSWER : C
12] The function call realloc(ptr,0) is
a) Same as free (ptr)
b) Used to set the value of ptr to be 0
c) the value of in the address represented by ptr
d) Invalid
ANSWER : A
13] Pointers can be used to achieve
a) Call by function
b) Call by reference
c) Call by name
d) Call y procedure
ANSWER : B
14]) The declaration of float *a[5] is
a) An ordinary array
b) A pointer to an array
c) An array to an pointer
d) Pointer to an array
ANSWER : C
15] The declaration int (*p)[8];
a) An array of pointer
b) A pointer to an array
c) Pointer to function
d) Function returning pointer
ANSWER : B
16] The oprators used in pointr is
a) * and /
b) & and *
c) & and |
d) – and >
ANSWER : B
17] Refer the given code snippet
{
int a[5]={-2,-1,3,4,5}
int *b;
b=&a[2];
}
Then value of b[-1] is:
a) 4
b) 3
c) -1
d) -2
ANSWER : C
18] Identify invalid pointer oprator
a) &
b) >>
c) *
d) None of these
ANSWER : B
19] What is the output of this C code?
#include
<stdio.h>
int mul(int a, int
b, int c)
{
return a * b *
c;
}
void main()
{
int
(*function_pointer)(int, int, int);
function_pointer = mul;
printf("The product of three numbers is:%d",
function_pointer(2, 3, 4));
}
a) The product of three numbers is:24
b) Run time error
c) Nothing
d) Varies
ANSWER : A
20] What is the output of this C code?
#include
<stdio.h>
void f(int
(*x)(int));
int myfoo(int);
int
(*fooptr)(int);
int
((*foo(int)))(int);
int main()
{
fooptr = foo(0);
fooptr(10);
}
int ((*foo(int
i)))(int)
{
return myfoo;
}
int myfoo(int i)
{
printf("%d\n", i + 1);
}
a) 10
b) 11
c) Compile time error
d) Undefined behavior
ANSWER : B
