2
Q:

What would be the output of the following program ?

main()

{

     const int x = 5; 

      int *ptrx;

      ptrx = &x;

      *ptr = 10;

       printf ("%d", x);

}

A) 5 B) 10
C) Error D) Garbage value

Answer:   B) 10



Explanation:
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.

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Subject: Programming

1 2149
Q:

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

main()

{

     printf ( "\nJamboree");

     main ();

}

Answer

Till the stack doesn't overflow

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Subject: Programming

2 3531
Q:

Will the following function work?

f1 ( int a, int b )

{

    return ( f2 (20) );

}

f2 ( int a )

{

    return ( a * a );

}

Answer

Yes

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Subject: Programming

0 1930
Q:

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 ");

}

Answer

In spite of defining the function f() as returning void, the program is trying to collect the value returned by f() in the variable a.

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Subject: Programming

0 1984
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 );

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Subject: Programming

0 2711
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++

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Subject: Programming

0 1830
Q:

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] );

}

Answer

00 00 AC 40

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Subject: Programming

7 7879
Q:

What would be the output of the following program?

main()

{

    printf (" %d%d%d ", sizeof (3.14f), sizeof (3.14), sizeof (3. 141);

}

Answer

4  8  10

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Subject: Programming

0 1870