Cross Compiler Questions

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11.

What will be output of the following c code?

#include
int main()
{
    const int *p;
    int a=10;
    p=&a;
    printf("%d",*p);
    return 0;
}

B

10

C

Garbage Value

D

Any Memory address

Correct Answer: B

In the following declaration const int *p; p can keep address of constant integer.

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12.

What will be output of the following c code?

#include
int main()
{
    int a= sizeof(signed) +sizeof(unsigned);
    int b=sizeof(const)+sizeof(volatile);
    printf("%d",a+++b);
    return 0;
}

A

10

B

9

C

8

D

Error

Correct Answer: C

Default data type of signed, unsigned, const and volatile is intSo, a = 4 and b =4 Now, a+++b = a++ + b = 4 + 4 //due to post increment operator. =8 But in Linux gcc compiler size of int is 4 byte so your out will be 16.

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13.

Which of the following is integral data type?

A

void

B

char

C

float

D

double

Correct Answer: B

In c char is integral data type. It stores the ASCII value.

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14.

What will be output of the following c code?

#include
int main()
{
    volatile int a=11;
    printf("%d",a);
    return 0;
}

A

11

B

Garbage

C

-2

D

Cannot Predict

Correct Answer: D

Value of volatile variable can

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15.

What will be output of the following c code?

#include
const enum Alpha
{
      X,
      Y=5,
      Z
}p=10;
int main()
{
    enum Alpha a,b;
    a= X;
    b= Z;
    printf("%d",a+b-p); 
    return 0; 
}

A

-4

B

-5

C

10

D

11

Correct Answer: A

Default value X is zero and Z = Y + 1 = 5 + 1 = 6 So, a + b

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