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TCS Technical Questions

Posted on :18-01-2016

This test consists of 50 questions.The Set Code for this paper is D.


Q1. The C language terminator is 

(a) semicolon

(b) colon

(c) period

(d) exclamation mark


Q2. What is false about the following -- A compound statement is 

(a) A set of simple statements

(b) Demarcated on either side by curly brackets

(c) Can be used in place of simple statement

(d) A C function is not a compound statement.


Q3. What is true about the following C Functions

(a) Need not return any value

(b) Should always return an integer

(c) Should always return a float

(d) Should always return more than one value


Q4. Main must be written as

(a) The first function in the program

(b) Second function in the program

(c) Last function in the program

(d) Any where in the program


Q5. Which of the following about automatic variables within a function is correct ?

(a) Its type must be declared before using the variable

(b) They are local

(c) They are not initialised to zero

(d) They are global


Q6. Write one statement equivalent to the following two statements 

x=sqr(a);

return(x);


Choose from one of the alternatives

(a) return(sqr(a));

(b) printf("sqr(a)");

(c) return(a*a*a);

(d) printf("%d",sqr(a));


Q7. Which of the following about the C comments is incorrect ?

(a) Ccomments can go over multiple lines

(b) Comments can start any where in the line

(c) A line can contain comments with out any language statements

(d) Comments can occur within comments 


Q8. What is the value of y in the following code?


x=7;

y=0; 

if(x=6) y=7; 

else y=1; 


(a) 7

(b) 0

(c) 1

(d) 6


Q9. Read the function conv() given below


conv(int t){ 

int u; 

u=5/9 * (t-32);

return(u);

} 

What is returned

(a) 15

(b) 0

(c) 16.1

(d) 29


Q10. Which of the following represents true statement either x is in the range of 10 and 50 or y is zero

(a) x >= 10 && x <= 50 || y = = 0

(b) x<50

(c) y!=10 && x>=50

(d) None of these


Q11. Which of the following is not an infinite loop ?

(a) while(1){ ....}


(b) for(;;)

{

...

}


(c) x=0; 

do{

/*x unaltered within the loop*/

.....}

while(x = = 0);


(d) # define TRUE 0

...

while(TRUE){

....} 

Q12. What does the following function print?


func(int i)

{ if(i%2)return 0; 

else return 1;}

main()

{

int =3;

i=func(i);

i=func(i);

printf("%d",i);

}


(a) 3

(b) 1

(c) 0

(d) 2


Q13. How does the C compiler interpret the following two statements

p=p+x;

q=q+y;


(a) p=p+x;

q=q+y 

(b)p=p+xq=q+y

(c)p=p+xq;

q=q+y 

(d)p=p+x/q=q+y


For questions 14,15,16,17 use the following alternatives

a.int

b.char

c.string

d.float


Q14. 9

Q15. 1 e 02

Q16. 10 e 05

Q17. 15

Q18. Read the folllowing code

# define MAX 100

# define MIN 100

....

....

if(x>MAX)

x=1;

else if(x x=-1;
x=50;

x=50;


if the initial value of x=200,what is the value after executing this code?

(a) 200

(b) 1

(c) -1

(d) 50 


Q19. A memory of 20 bytes is allocated to a string declared as char *s
then the following two statements are executed:


s=Entrance

l=strlen(s);


what is the value of l ?

(a)20

(b)8

(c)9

(d)21


Q20. Given the piece of code

int a[50];

int *pa;

pa=a;

To access the 6th element of the array which of the following is incorrect?

(a) *(a+5)

(b) a[5]

(c) pa[5]

(d) *(*pa + 5}

Q21. Consider the following structure:


struct num nam{

int no;

char name[25];

}


struct num nam n1[]={{12,"Fred"},{15,"Martin"},{8,"Peter"},{11,Nicholas"}};

.....

.....

printf("%d%d",n1[2],no,(*(n1 + 2),no) + 1);


What does the above statement print?

(a) 8,9

(b) 9,9

(c) 8,8

(d) 8,unpredictable value



Q22. Identify the in correct expression

(a) a=b=3=4;

(b) a=b=c=d=0;

(c)float a=int b=3.5;

(d)int a; float b; a=b=3.5;


Q23. Regarding the scope of the varibles;identify the incorrect statement:

(a)automatic variables are automatically initialised to 0

(b)static variables are are automatically initialised to 0

(c)the address of a register variable is not accessiable

(d)static variables cannot be initialised with any expression


Q24. 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 2|exp 3|exp 4;


(d) if cond 3

exp 1;

else if cond 2 exp 2;

else if cond 3 exp 3;

else exp 4;


Q25. The operator for exponencation is

(a) **

(b) ^

(c) % 

(d) not available


Q26. Which of the following is invalid

(a) a+=b

(b) a*=b

(c) a>>=b

(d) a**=b 


Q27. 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


Q28. 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 interst for 1 year

 

Q29. How many times does the loop occurs?

a=0;

while(a<5)

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


(a)infinite

(b)5

(c)4

(d)6


Q30. How many times does the loop iterated ?

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

printf("Hi ");


(a)10

(b) 2

(c) 5

(d) None of these


Q31. 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 


Q32. 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;..}


Q33. 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


Q34. Pick out the add one out

(a) malloc()

(b) calloc()

(c) free()

(d) realloc() 


Q35. 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


Q36. 

# 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

 

Q37. 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


Q38. 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


Q39. The format specified for hexa decimal is

(a) %d

(b) %o

(c) %x

(d) %u


Q40. 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


Q41. 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


Q43. Int *a[5] refers to

(a) array of pointers

(b) pointer to an array

(c) pointer to a pointer 

(d) none of these


Q44. 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;


  
   






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