TCS COBOL PAPER

This question paper is TCS C&COBOL TEST PAPER.

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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 = \n%s", name);

a) name =

name

b) name =

followed by funk characters

c) name = \nname

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 != '\0')

{

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 = \n%s", name);

a) name =

name

b) name =

followed by funk characters

c) name = \nname

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 != '\0')

{

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



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