What will be output of following program?


#include <stdio.h>
int main()

{
   void (*p)();
   int (*q)();
   int (*r)();
   p = clrscr;
   q = getch;
   r = puts;
  (*p)();
  (*r)("www.sawaal.com");
  (*q)();
  return 0;
}

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);

}

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 );

}

How many times the following program would print 'Jamboree'?

main()

{

     printf ( "\nJamboree");

     main ();

}

Will the following function work?

f1 ( int a, int b )

{

    return ( f2 (20) );

}

f2 ( int a )

{

    return ( a * a );

}

Point out the error, if any, in the following program.

main()

{

    int a = 10;

    void f();

    a = f();

    printf ( "\n %d", a );

}

void f()

{

    printf ( "\n Hi ");

}

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 );

}

What would be the output of the following program?

main()

{

    float a = 0.7;

    if ( a < 0.7f )

          printf ( " C ");

    else 

          Printf ( " C++ ");

}

If the binary equivalent of 5.375 in normalised form is 0100 0000 1010 1100 0000 0000 0000 0000, what would be the output of the following program?

main()

{

    float a = 5.375 ;

    char *p;

    int i;

    p = ( char* ) &a ;

    for ( i = 0; i <= 3 ; i++ )

          printf ( " %02x ", (unsigned char ) p[i] );

}