Placement Papers - TCS

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TCS Test Paper - C and COBOL

Posted By : Nagaraj Rating : +10, -1

Paper : TCS's C and COBOL Test Paper

1) Which of these is an invalid dataname?
a) wd-count b) wd_count
c) w4count d) wdcountabcd

2) What is the output of the following program
main ()
{
unsigned int i;

for (i = 10; i >= 0; i--)
printf ("%d", i);
}
a) prints numbers 10 - 0 b) prints nos 10 - 1
c) d) goes into infinite loop

11) What is the value of the following expression?
i = 1;
i << 1 % 2
a) 2 b)
c) 1 d) 0

12) What is the value of the following expression?
i = 1;
i = (i <<= 1 % 2)
a) 2 b)
c) 0 d) erroneous syntax

What is the result?
13) *A + 1 - *A + 3
a) - b) -2
c) 4 d) none of the above

14) &A[5] - &A[1]?
a) b)
c) 4 d)

15) C allows
a) only call by value
b) only call by reference
c) both
d) only call by value and sometimes call by reference

16) The following statement is
" The size of a struct is always equal to the sum
of the sizes of its members"
a) valid b) invalid c) can't say

17) How many x's are printed?
for (i = 0, j = 10; i < j; i++, j--)
printf ("x");
a) 10 b) 5 c) 4 d) none

18) output?
main ()
{
int i = 2, j = 3, k = 1;
swap (i, j)
printf ("%d %d", i, j);
}
swap (int i, int j)
{
int temp;
temp = i; i = j; j = temp;
}
YOU KNOW THE ANSWER

19) main ()
{
int i = 2;
twice (2);
printf ("%d", i);
}
twice (int i)
{
bullshit
}

int i, b[] = {1, 2, 3, 4, 5}, *p;
p = b;
++*p;
p += 2;

20) What is the value of *p;
a) 2 b) 3 c) 4 d) 5
21) What is the value of (p - (&p - 2))?
a) b) 2 c) d)

23) x = fopen (b, c)
what is b?
a) pointer to a character array which contains the filename
b) filename whithin double quotes
c) can be anyone of the above
d) none

24) x = malloc (y). Which of the following statements is correct.
a) x is the size of the memory allocated
b) y points to the memory allocated
t
c) x points to the memory allocated
d) none of the above

25) which is the valid declaration?
a) #typedef struct { int i;}in;
b) typedef struct in {int i;};
c) #typedef struct int {int i;};
d) typedef struct {int i;} in;

26) union {
int no;
char ch;
} u;
What is the output?
u.ch = '2';
u.no = 0;
printf ("%d", u.ch);
a) 2 b) 0 c) null character d) none

27) Which of these are valid declarations?
i) union { ii) union u_tag {
int i; int i;
int j; int j;
}; };

iii) union { iv) union {
int i; int i;
int j; int j;
FILE k; }u;
};

a) all correct b) i, ii, iv
c) ii & iv d)

28) p and q are pointers to the same type of dataitems.
Which of these are valid?
i) *(p+q)
ii) *(p-q)
iii) *p - *q

a) all
b)
c) iii is valid sometimes

29) which are valid?
i) pointers can be added
ii) pointers can be subtracted
iii) integers can be added to pointers
a) all correct b) only i and ii

30) int *i;
float *f;
char *c;
which are the valid castings?
i) (int *) &c
ii) (float *) &c
iii) (char *) &i

31) int i = 20;
printf ("%x", i);
what is the output?
a) x14 b) 14 c) 20 d) none of the above

32) main ()
{
char *name = "name";
change (name);
printf ("%s", name);
}
change (char *name)
{
char *nm = "newname";
name = nm;
}
what is the output?
a) name b) newname c) name = nm not valid
d) function call invalid

33) char name[] = {'n', 'a', 'm', 'e'}
printf ("name =
%s", name);
a) name =
name
b) name =
followed by funk characters
c) name =
name
d) none

34) int a = 0, b = 2;
if (a = 0)
b = 0;
else
b *= 10;
what is the value of b?
a) 0 b) 20 c) 2 d) none

35) int x = 2, y = 2, z = 1;
what is the value of x afterh the following statmements?
if (x = y%2)
z = crap
else
crap

a) 0 b) 2 c)1 d)none

37) output?
initially n = -24;
printd (int n)
{
if (n < 0)
{
printf ("-");
n = -n;
}
if (n % 10)
printf ("%d", n);
else
printf ("%d", n/10);

printf ("%d", n);
}
a. -24 b.24 c. d.-224

38) float x, y, z;
scanf ("%f %f", &x, &y);

if input stream contains "4.2 3 2.3 ..." what will x and y contain
after scanf?
a. 4.2, 3.0
b. 4.2, 2.3
c.
d.

39) #define max(a,b) (a>b?b:a)
#define squre(x) x*x

int i = 2, j = 3, k = 1;
printf ("%d %d", max(i,j), squre(k));

output?
a.32 b.23 c.31 d.13

40) struct adr {
char *name;
char *city;
int zip;
};
struct adr *adradr;
which are valid references?

i) adr->name X
ii) adradr->name
iii) adr.zip X
iv) adradr.zip

41) main (x, y)
int x, char *y[];
{
printf ("%d %s", x, y[1]);
}
output when invoked as
prog arg1
a. 1 prog b. 1 arg1 c. 2 prog d. 2 arg1

42) extern int s;
int t;
static int u;
main ()
{
}
which of s, t and u are availeble to a function present in another
file
a. only s
b. s & t
c. s, t, u
d. none


43) main ()
{
}
int a;
f1(){}
f2(){}

which of the functions is int a available for?
a. all of them
b. only f2
c. only f1
d. f1 and f2 only



int a = 'a', d = 'd';
char b = "b", c = "cr";

main ()
{
mixup (a, b, &c);
}
mixup (int p1, char *p2, char **p3)
{
int *temp;
....doesnt matter.....
}

44) what is the value of a after mixup?
a. a b.b c.c d.none of the above

45) what is the value of b after mixup?
a. a b.b c.c d.none of the above

46) main ()
{
char s[] = "T.C.S", *A;
print(s);
}
print (char *p)
{
while (*p != '')
{
if (*p != ".")
printf ("%s", *p);
p++;
}
}
output?
a.T.C.S
b.TCS
c.
d. none of the above

47) a question on do ... while
48) a question on % operator


49) main ()
{
int ones, twos, threes, others;
int c;

ones = twos = threes = others = 0;

while ((c = getchar ()) != EOF)
{
switch (c)
{
case '1': ++ones;
case '2': ++twos;
case '3': ++threes;
break;
default: ++others;
break;
}
}
printf ("%d %d", ones, others);
}

if the input is "1a1b1c" what is the output?
a. 13
b.
c. 33
d. 31


Subject: TCS C Questions

1) Which of these is an invalid dataname?
a) wd-count b) wd_count
c) w4count d) wdcountabcd

2) What is the output of the following program
main ()
{
unsigned int i;

for (i = 10; i >= 0; i--)
printf ("%d", i);
}
a) prints numbers 10 - 0 b) prints nos 10 - 1
c) d) goes into infinite loop

11) What is the value of the following expression?
i = 1;
i << 1 % 2
a) 2 b)
c) 1 d) 0

12) What is the value of the following expression?
i = 1;
i = (i <<= 1 % 2)
a) 2 b)
c) 0 d) erroneous syntax

What is the result?
13) *A + 1 - *A + 3
a) - b) -2
c) 4 d) none of the above

14) &A[5] - &A[1]?
a) b)
c) 4 d)

15) C allows
a) only call by value
b) only call by reference
c) both
d) only call by value and sometimes call by reference

16) The following statement is
" The size of a struct is always equal to the sum
of the sizes of its members"
a) valid b) invalid c) can't say

17) How many x's are printed?
for (i = 0, j = 10; i < j; i++, j--)
printf ("x");
a) 10 b) 5 c) 4 d) none

18) output?
main ()
{
int i = 2, j = 3, k = 1;
swap (i, j)
printf ("%d %d", i, j);
}
swap (int i, int j)
{
int temp;
temp = i; i = j; j = temp;
}
YOU KNOW THE ANSWER

19) main ()
{
int i = 2;
twice (2);
printf ("%d", i);
}
twice (int i)
{
bullshit
}

int i, b[] = {1, 2, 3, 4, 5}, *p;
p = b;
++*p;
p += 2;

20) What is the value of *p;
a) 2 b) 3 c) 4 d) 5
21) What is the value of (p - (&p - 2))?
a) b) 2 c) d)

23) x = fopen (b, c)
what is b?
a) pointer to a character array which contains the filename
b) filename whithin double quotes
c) can be anyone of the above
d) none

24) x = malloc (y). Which of the following statements is correct.
a) x is the size of the memory allocated
b) y points to the memory allocated
c) x points to the memory allocated
d) none of the above

25) which is the valid declaration?
a) #typedef struct { int i;}in;
b) typedef struct in {int i;};
c) #typedef struct int {int i;};
d) typedef struct {int i;} in;

26) union {
int no;
char ch;
} u;
What is the output?
u.ch = '2';
u.no = 0;
printf ("%d", u.ch);
a) 2 b) 0 c) null character d) none

27) Which of these are valid declarations?
i) union { ii) union u_tag {
int i; int i;
int j; int j;
}; };

iii) union { iv) union {
int i; int i;
int j; int j;
FILE k; }u;
};

a) all correct b) i, ii, iv
c) ii & iv d)

28) p and q are pointers to the same type of dataitems.
Which of these are valid?
i) *(p+q)
ii) *(p-q)
iii) *p - *q

a) all
b)
c) iii is valid sometimes

29) which are valid?
i) pointers can be added
ii) pointers can be subtracted
iii) integers can be added to pointers
a) all correct b) only i and ii

30) int *i;
float *f;
char *c;
which are the valid castings?
i) (int *) &c
ii) (float *) &c
iii) (char *) &i

31) int i = 20;
printf ("%x", i);
what is the output?
a) x14 b) 14 c) 20 d) none of the above

32) main ()
{
char *name = "name";
change (name);
printf ("%s", name);
}
change (char *name)
{
char *nm = "newname";
name = nm;
}
what is the output?
a) name b) newname c) name = nm not valid
d) function call invalid

33) char name[] = {'n', 'a', 'm', 'e'}
printf ("name =
%s", name);
a) name =
name
b) name =
followed by funk characters
c) name =
name
d) none

34) int a = 0, b = 2;
if (a = 0)
b = 0;
else
b *= 10;
what is the value of b?
a) 0 b) 20 c) 2 d) none

35) int x = 2, y = 2, z = 1;
what is the value of x afterh the following statmements?
if (x = y%2)
z = crap
else
crap

a) 0 b) 2 c)1 d)none

37) output?
initially n = -24;
printd (int n)
{
if (n < 0)
{
printf ("-");
n = -n;
}
if (n % 10)
printf ("%d", n);
else
printf ("%d", n/10);

printf ("%d", n);
}
a. -24 b.24 c. d.-224

38) float x, y, z;
scanf ("%f %f", &x, &y);

if input stream contains "4.2 3 2.3 ..." what will x and y contain
after scanf?
a. 4.2, 3.0
b. 4.2, 2.3
c.
d.

39) #define max(a,b) (a>b?b:a)
#define squre(x) x*x

int i = 2, j = 3, k = 1;
printf ("%d %d", max(i,j), squre(k));

output?
a.32 b.23 c.31 d.13

40) struct adr {
char *name;
char *city;
int zip;
};
struct adr *adradr;
which are valid references?

i) adr->name X
ii) adradr->name
iii) adr.zip X
iv) adradr.zip

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