C QUESTIONS...

C QUESTIONS:

[Q001]. The following code is not well-written. What does the program do?

Void main()

{

 int a=1, b=2, c=3,d=4;

 printf("%d %d", a, b);

 printf (" %d %d", c, d);

}

(a)Run-Time Error    (b)Compile-Time Error                  (c)1 2 3 4                (d)None of these

Ans. (c)

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[Q002]. What will be the output of the following program :

void main()

{

   int a=1,b=2,c=3;

   c=(--a, b++)-c;

   printf("%d %d %d",a,b,c);

}

(a)0 3 -3                 (b)Compile-Time Error                  (c)0 3 -1                 (d)0 3 0

Ans. (c)        

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[Q003]. What will be the output of the following program :

void main()

{

  int a=1,b=2,c=3,d=4,e;

  e=(a,a)+(b,c)+(c,d)-(d,b);

  printf("%d", e);

}

(a)Compile-Time Error         (b)10                               (c)6                       (d)2

Ans. (c)

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[Q004]. What will be the output of the following program:

void main()

{

  float val=2.;

  printf("%.2",val);

}

(a)Compile-Time error         (b)2.00                                      (c)%.2                    (d)2.000000

Ans. (c)since there is no ‘f’ .         

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[Q005]. What will be the output of the following program :

void main()

{

  int a=5;

  int b=6;;

  int c=a+b;

  printf("%d",c);

}

(a)Compile-Time Error         (b)Run-Time Error              (c)11                      (d)None of these

Ans. (c)        

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[Q006]. What will be the output of the following program :

void main()

{

  int i,j;

  for (i=1; i<=3; i++)

    for (j=1; j<3; j++)

      {

           if (i == j)

            continue;

         if ((j % 3) > 1)

            break;

         printf("%d",i);

      }

}

Ans.:2,3       

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[Q007]. What will be the output of the following program :

          #define swap(a,b) temp=a; a=b; b=temp;

void main()

{

   static int a=5,b=6,temp;

   if (a > b)

      swap(a,b);

   printf("a=%d b=%d",a,b);

}

(a)a=5 b=6             (b)a=6 b=5                       (c)a=6 b=0             (d)None of these

Ans. (c)        

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[Q008]. What will be the output of the following program :

void main()

{

  unsigned int val=5;

  printf("%u %u",val,val-11);

}

(a)Compile-Time error         (b)5 -6                                       (c)5 65530              (d)None of these

Ans. (c) since 2’s complement of –6 = 65530.

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Q009]. What will be the output of the following program :

void main()

{

  int x=4,y=3,z=2;

  *&z*=*&x**&y;

     printf("%d",z);

}

(a)Compile-Time error         (b)Run-Time Error              (c)24                      (d)Unpredictable

Ans. (c)         since *&z=z

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[Q010]. What will be the output of the following program :

void main()

{

  int i=5,j=5;

  i=i++*i++*i++*i++;

  printf("i=%d ",i);

  j=++j*++j*++j*++j;

  printf("j=%d",j);

}

(a)Compile-Time Error         (b)i=1680 j=1680               (c)i=629 j=6561                (d)i=1681 j=3024

Ans. (c) Compiler dependent

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