Objective Questions set C/C++ – Part 3

10 Objective type interview questions with answers on C/C++

Before you start:-

1. You can check your answer by filling a,b,c,d or e in the text box.
2. You can get the answer by clicking Give Up Button.

Try yourself before giving up 🙂

Q1) What will the below program prints ?

#include
void e( int );
main( )
{
    int a;
    a=3;
    e(a);
}

void e(int n)
{
    if (n>0)
    {
        e(--n);
        printf("%d",n);
        e(--n);
    }
}

Options: a) 0120 b) 0121 c) 0201 d) 0211

Tried enough already?

Q2)

#include
main( )
{
    int a[5]= {1,2,3,4,5};
    int*ptr = (int*)(&a+1);
    printf("%d %d", *(a+1), *(ptr-1));
}

Options: a)2 2 b) 2 1 c) 2 5 d) None

Tried enough already?

Q3)

#include
void foo(int [][3]);
main( )
{
    int a[3][3]={ {1,2,3}, {4,5,6}, {7,8,9} };
    foo(a);
    printf("%d", a[2][1]);
}

void foo(int b[][3])
{
    ++b;
    b[1][1]=35;
}

Options: a)8, b) 9, c) 7, d)35

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Q4)
If performance is a critical requirement, then storage class should be used is ?
a)auto b) register c) extern d) static

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Q5)
In a program
1-> char str1[ ] = “abc”;
2-> char *str2 = “xyz”;
3-> str2 = str1;
4-> str1 = str2;

Options:
a)compile error at line 3
b)compile error at line 4
c)no problem in the code
d)run time error

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Q6)

int A = sizeof(char*)
int B = sizeof(int*)

a)A=B b)A<B c)A>B d) depends on compiler

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Q7)

void func (int y)
{
static int x;
.
.
.
}

x and y will be stored on respectively in ?

Options:
a) stack and heap b) stack and data section c) data section and stack d) heap and data section

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Q8)

#include

main(){
    int i=5;
    ++i++;
    printf("%d", i);
}

Options:
a)5 b) 6 c) 7 d) compilation error

Tried enough already?

Q9)
Statement 1-> const char *p1=”hello world”;
Statement 2-> char *const p2=”hello world”;
Statement 3-> p1=”welcome”;
Statement 4-> p2=”good bye”;
Statement 5-> *(p1+3) = ‘A’;
Statement 6­-> *(p2+3) = ‘A’;

Which statement cause problem ?

Options: a)4 & 5 b) 1 & 3 c) 3 & 5 d) 2 & 3

Tried enough already?

Q10)

#include
int function()
{
    static int a=0;
    a=a+1;
    return a;
}

main()
{
    function();
    function();
    printf("%d", function());
}

Options: a) 1 b) 2 c) 3 d) None

Tried enough already?

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