Sawaal
  • Home/
  • Searching for at

 Searching for "at"

Q:

What would be the output of the following program?

main()

{

    char a[] = "Visual C++";

    char *b = "Visual C++";

    printf ("\n%d %d", sizeof (a), sizeof (b));

    printf ("\n%d %d", sizeof (*a), sizeof (*b));

} 

Answer

11  2


 1   1

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

How would you obtain segment and offset addresses from a far address of a memory location?

Answer

#include "dos.h"


main()


{


    Char far *scr = ( char far *) 0xB8000000;


    Char *seg, *off;


    Seg = (char *) FP_SEG ( scr );


    Off = ( char *) FP_OFF ( scr );


}


 

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

How would you eliminate the warning generated on complaining the following program?

main()

{

  char far *scr;

  scr = 0xB8000000;

  *scr = 'A';

}

Answer

Use the typecast scr = (char far *) 0xB8000000;

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

What would be the output of the following program assuming that the array beigns at location 1002?

main()

{

   int a[3][4] = {

                            1 , 2 , 3 , 4

                            5,  6 , 7, 8

                            9, 10 , 11, 12

                       };

    Printf ("\n%u %u %u", a[0] + 1, *( a[0] + 1), *( *(a + 0) + 1) );

}

Answer

1004  2  2

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

Indicate what would the SWAP macro be expanded to on preprocessing. Would the code compile?

#define SWAP (a, b, c ) (c t; t = a, a = b, b = t; )

main()

{

    int x = 10, y = 20;

    SWAP (x, y, int );

    printf ( " %d%d ", x, y);

}

Answer

( int t ; t = a, a = b, b = t ;);


This code won't compile since declaration of t cannot occur within parentheses.


 

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

What would be the output of the following program?

# define SQR(x) (x * x)

main()

{

    int a, b = 3;

    a = SQR ( b + 2 );

    Printf ("\n %d ", a );

}

Answer

11


Because, on preprocessing the expression becomes  a = ( 3 + 2 * 2 + 3),  as Ist preference is multiply & then addition, it evalvates as(3+ 2 * 3 +2) = (3+6+2)=11.

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

There is a mistake in the following code. Add a statement in it to remove it.

main()

{

     int a;

     a = f (10, 3.14) ;

     printf ( " %d ", a );

}

f (int aa, float bb)

{

    return ( ( float ) aa + bb );

}

Answer

Add the following function prototype in main ():


float f ( int, float );

Report Error

View answer Workspace Report Error Discuss

Subject: Programming

Q:

What would be the output of the following program?

main()

{

    float a = 0.7;

    if ( a < 0.7f )

          printf ( " C ");

    else 

          Printf ( " C++ ");

}

Answer

C++

Report Error

View answer Workspace Report Error Discuss

Subject: Programming