Objective Questions set C/C++ – Part 4

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)

#include
main()
{
    unsigned char i;
    int sum=0;
    for(i=0;i<300;i++)
        sum=sum+i;
    printf("%d",sum);
}

Options: a) 44850 b) 45150 c) 300 d) Infinite Loop

Tried enough already?

Q2)

#include
fun(int i)
{
    int j=0;
    while (i & i-1) {
        j++;   
    }
    printf("%d",j);
}

main(){
    f(100);
}

Options: a. 100 b. 99 c. 2 d. 3

Tried enough already?

Q3)

Code 1 :
        for(i=0; i<1000; i++)
                for(j=0; j<100; j++)
                        x = y;

Code 2 :
        for(i=0; i<100; i++)
                for(j=0; j<1000; j++)
                        x = y;

Which code will execute faster ?

Options:
a) Code 1 and Code 2 are of same speed,
b) Code 1,
c) Code 2,
d) Can’t Say

Tried enough already?

Q4)

main()
{
    int a[10] = {1, 2, 3, ...., 10}, i, x=10, temp;
    for(i=0; i < x; i++){
        temp = a[i];
        a[i] = a[x-i-1];
        a[x-i-1] = temp;
    }
}

What happens to the elements of the array a ?
a) Reversed
b) Only some portions are altered
c) Remains same
d) None

Tried enough already?

Q5)

#include
# define MAX(a, b) a>b ? a:b
main()
{
    int m, n;
    m = 3 + MAX(2, 3);
    n = 2 * MAX(3, 2);
    printf("%d, %d\n", m, n);
}

Options: a) 6, 6 b) 5, 6 c) 2, 3 d) None

Tried enough already?

Q6)

#include
main(){
        int i=10;
        printf("%d %d %d",i,++i,i++);
}

a).10 11 12
b).12 11 10
c).10 11 11
d).12 12 10

Tried enough already?

Q7)
What is the size of ‘q’ in the following program?

union{  
    int x;
    char y;
    struct {
	char x;
	char y;
	int xy;
    }p;
}q;

Options:
a)11
b)6
c)4
d)5
e)none

Tried enough already?

Q8)
Result of the following program is ?

main()
{
    int i=0;
    for(i=0;i<20;i++)
    {
        switch(i)
	{
	    case 0:i+=5;
	    case 1:i+=2;
	    case 5:i+=5;
	    default  i+=4;
	    break;
        }
	printf("%d,",i);
    }
}

Options:
a)0,5,9,13,17,
b)5,9,13,17,
c)12,17,22,
d)16,21,
e)syntax error

Tried enough already?

Q9)

#include
main()
{
    char *p1="name";
    char *p2;
    p2=(char*)malloc(20);
    while(*p2++ = *p1++);
    printf("%s\n",p2);
}

Options: a) name b) n c) ame d) Empty String

Tried enough already?

Q10)

#include
main()
{
    int x=20,y=35;
    x=y++ + x++;
    y= ++y + ++x;
    printf("%d %d\n",x,y);
}

Options: a) 55 94 b) 56 94 c) 57 94 d) None

Tried enough already?

Facebook Comments