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TCS Talent Test Paper (Technical -C Test)


TCS Talent Test Paper (Technical -C Test)

1. The C language terminator is
(a) semicolon (b) colon © period (d) exclamation mark

2. What is false about the following -- A compound statement is
(a) A set of simple statements (b) Demarcated on either side by curly brackets
© Can be used in place of simple statement (d) A C function is not a compound statement.

3. What is true about the following C Functions
(a) Need not return any value (b) Should always return an integer
© Should always return a float (d) Should always return more than one value

4. Main must be written as
(a) The first function in the program (b) Second function in the program
© Last function in the program (d) Any where in the program

5. 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
© They are not initialized to zero (d) They are global

6. 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)");
© return(a*a*a); (d) printf("%d",sqr(a));

7. Which of the following about the C comments is incorrect ?
(a) Comments can go over multiple lines
(b) Comments can start any where in the line
© A line can contain comments with out any language statements
(d) Comments can occur within comments

8. What is the value of y in the following code?
if(x=6) y=7;
else y=1;
(a) 7 (b) 0 © 1 (d) 6

9. Read the function conv() given below
conv(int t)
int u;
u=5/9 * (t-32);
What is returned
(a) 15 (b) 0 © 16.1 (d) 29

10. 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
© y!=10 && x>=50 (d) None of these

11. Which of the following is not an infinite loop ?
(a) while(1)\{ ..} (b) for(;Wink{..}
© x=0; (d) # define TRUE 0
do{ /*x unaltered within the loop*/ ..
..}while(x = = 0); while(TRUE){ ..}

12. What does the following function print?
func(int i)
if(i%2)return 0;
else return 1;
int =3;
(a) 3 (b) 1 © 0 (d) 2

13. How does the C compiler interpret the following two statements
(a) p= p+x; (b)p=p+xq=q+y; ©p= p+xq; (d)p=p+x/q=q+y;
q=q+y; q=q+y;

For questions 14,15,16,17 use the following alternatives:
a.int b.char c.string d.float

14. '9'

15. "1 e 02"

16. 10e05

17. 15
18. Read the following code
# define MAX 100
# define MIN 100
else if(x<MIN)
if the initial value of x=200,what is the value after executing this code?
(a) 200 (b) 1 © -1 (d) 50

19. A memory of 20 bytes is allocated to a string declared as char *s then the following two statements are executed:
what is the value of l ?
(a)20 (b)8 ©9 (d)21

20. Given the piece of code
int a[50];
int *pa;
To access the 6th element of the array which of the following is incorrect?
(a) *(a+5) (b) a[5] © pa[5] (d) *(*pa + 5}

21. 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 © 8,8 (d) 8,unpredictable value

22. Identify the in correct expression
(a)a=b=3=4; (b)a=b=c=d=0; ©float a=int b= 3.5; (d)int a; floatb;a=b=3.5;

23. Regarding the scope of the varibles;identify the incorrect statement:
(a) automatic variables are automatically initialized to 0 (b) static variables are are automatically initialized to 0
© 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;
© 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;

25. The operator for exponentiation is
(a) ** (b) ^ © % (d) not available

26. Which of the following is invalid
(a) a+=b (b) a*=b © a>>=b (d) a**=b

27. What is y value of the code if input x=10
if (x==10)
else if(x==9)
else y=8;
(a)9 (b)8 ©6 (d)7

28. What does the following code do?
fn(int n, int p, int r)
static int a=p;
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
© computes simple interest for four year (d) computes compound interest for 1 year

29. a=0;
How many times does the loop occurs?
(a) infinite (b)5 ©4 (d)6

30. How many times does the loop iterated ?
(a)10 (b) 2 © 5 (d) None of these

31. What is incorrect among the following
A recursive function
(a) calls itself (b) is equivalent to a loop
© 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;..}
© do{..if(expn 1)continue;..}while(expn 2); (d) while(!expn 2)\{if(expn 1)continue;..\}

33. Consider the following program
unsigned int i=10;
How many times the loop will get executed
(a)10 (b)9 ©11 (d) infinite

34.Pick out the odd one out
(a) malloc() (b) calloc() © free() (d) realloc()

35.Consider the following program
int a[5]={1,3,6,7,0};
int *b;
The value of b[-1] is
(a) 1 (b) 3 © -6 (d) none

36. # define prod(a,b)=a*b
int x=2;
int y=3;
the output of the program is
(a) 8 (b) 6 © 7 (d) None

37.Consider the following program segment
int n,sum=1;
case 2Confusedum=sum+2;
case 3Confusedum*=2;
If n=2, what is the value of sum
(a) 0 (b) 6 © 3 (d) None of these

38. Identify the incorrect one
(a) 1 only (b) 1&3 © 3 only (d) All of the above

39. The format specified for hexa decimal is
(a) %d (b) %o © %x (d) %u

40. Find the output of the following program
int x=5, *p;
(a) 5 (b) 6 © 0 (d) none of these

41.Consider the following C code
int i=3,x;
int func(int n)
static sum=0;
The final value of x is
(a) 6 (b) 8 © 1 (d) 3

43. Int *a[5] refers to
(a) array of pointers (b) pointer to an array © pointer to a pointer (d) none of these

44.Which of the following statements is incorrect
(a) typedef struct new
int n1;
char n2;

(b) typedef struct
int n3;
char *n4;

© typedef union
int n5;
float n6;
} UDT;

(d) #typedef union
int n7;
float n8;

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