sun microsystem placement queston on C Programming Language

23. Regarding the scope of the variables, identify the incorrect statement:

(a) automatic variables are automatically initialized to 0

(b) static variables are areautomatically initialized to 0

(c) the address of a register variable is not accessible
(d) static variables cannot be initialized with any expression
24. cond 1?cond 2?cond 3?:exp 1:exp 2:exp 3:exp 4; is equivalent to which of the following?

(a) if cond 1 exp 1;
else if cond 2
exp 2;
else if cond 3
exp 3;
else exp 4;
(b) if cond 1
if cond 2


if cond 3


exp 1;


else exp 2;


else exp 3;


else exp 4;


(c) if cond 1 && cond
2 && cond 3


exp 1 exp 2exp 3exp 4;


(d) if cond 3


exp 1;


else if cond 2 exp 2;


else if cond 3 exp 3;


else exp 4;


25. The operator for exponentiation is


(a)
**
(b) ^
(c)
%
(d) not available



26. Which of the following is invalid


(a)
a+=b
(b) a*=b
(c)
a>>=b
(d) a**=b



27. What is y value of the code if input x=10


y=5;


if (x==10)


else if(x==9)


else y=8;

(a)9
(b)8
(c)6
(d)7



28. What does the following code do?


fn(int n, int p, int r)


{


static int a=p;


switch(n)


{


case 4:a+=a*r;


case 3:a+=a*r;


case 2:a+=a*r;


case 1:a+=a*r;


}


}

(a) computes simple interest for one
year
(b) computes amount on compound interest for 1 to 4 years

(c) computes simple interest for four
year
(d) computes compound interest for 1 year



29.


a=0;


while(a<5)


printf("%d\\n",a++);

How many times does the loop occurs?

(a) infinite

(b)5
(c)4
(d)6



30. How many times does the loop iterated ?

for(i=0;i=10;i+=2)


printf("Hi\\n");


(a)10
(b)
2
(c) 5
(d) None of these



31. What is incorrect among the following a recursive function


(a) calls itself
(b) is equivalent to a loop

(c) has a termination condition
(d) does not have a return value at all
32. Which of the following go out of the loop if expn 2 becoming false


(a) while(expn 1)\{...if(expn
2)continue;}

(b) while(!expn 1)\{if(expn 2)continue;...}

(c) do{..if(expn 1)continue;..}while(expn 2); (d) while(!expn
2)\{if(expn 1)continue;..\}



33. Consider the following program


main()


{


unsigned int i=10;


while(i>=0)


{


printf("%u",i)


i--;


}


}

How many times the loop will get executed


(a)10
(b)9
(c)11
(d) infinite



34.Pick out the odd one out

(a) malloc()
(b) calloc()
(c) free()
(d) realloc()



35.Consider the following program


main()


{


int a[5]={1,3,6,7,0};


int *b;


b=&a[2];


}

The value of b[-1] is

(a)
1
(b) 3
(c)
-6
(d) none



36.
# define prod(a,b)=a*b


main()


{


int x=2;


int y=3;


printf("%d",prod(x+2,y-10));


}

the output of the program is

(a)
8
(b) 6
(c)
7
(d) None



37.Consider the following program segment


int n,sum=1;


switch(n)


{


case 2:sum=sum+2;


case 3:sum*=2;


break;


default:sum=0;


}

If n=2, what is the value of sum

(a)
0
(b) 6
(c)
3
(d) None of these



38. Identify the incorrect one


1.if(c=1)


2.if(c!=3)


3.if(a


4.if(c==1)

(a) 1
only
(b) 1&3
(c) 3
only
(d) All of the above



39. The format specified for hexa decimal is

(a)
%d
(b)
%o
(c) %x
(d) %u



40. Find the output of the following program


main()


{


int x=5, *p;


p=&x


printf("%d",++*p);


}

(a)
5
(b)
6
(c) 0
(d) none of these



41.Consider the following C code


main()


{


int i=3,x;


while(i>0)


{


x=func(i);


i--;


}


int func(int n)


{


static sum=0;


sum=sum+n;


return(sum);


}


}

The final value of x is

(a)
6
(b) 8
(c) 1
(d) 3



43. Int *a[5] refers to

(a) array of pointers

(b) pointer to an array

(c) pointer to a pointer

(d) none

44.Which of the following statements is incorrect

(a)
typedef struct new
{
int n1;
char n2;
} DATA;

(b) typedef struct
{
int n3;
char *n4;
}ICE;
(c)
typedef union
{
int n5;
float n6;
} UDT;
(d)
#typedef union
{
int n7;
float n8;
} TUDAT;