Computer Science – Programming With C

Choose the correct statement.

Which is true of conditional compilation ?

C was primarily developed as a

C is a

Even if a particular implementation doesn’t limit the number of characters in an identifier, it is advisable to be concise because

Tha minimum number of temporary variables needed to swap the contents of two variables is

The purpose of the following program fragment
b = s + b;
s = b – s;
b = b – s;
where s,b are two integers is to

Consider the function
find (int x, int y)
{return((x

Let a,b be two non-negative integers. Which of the following calls, finds the positive difference of a and b ?

If integer needs two bytes of storage, then maximum value of an unsigned integer is

If integer needs two bytes of storage, then maximum value of a signed integer is

printf (“%d”, print f(“tim”));

If abc is the input then the following program fragment
char x, y, z;
printf(“%d”, scanf (“%c%c%c”, &x, &y, &z)); results in

Consider the statements
putchar (getchar ());
putchar (getchar ());
If
a
b
is the input, the output will be

Let a,b be two positive integers, Which of the following options correctly relates / and %?

Literal means

Length of the string “correct” is

Which of the following are true regardless of the implementation?

Coercion

Choose the correct statements.

Consider the following program fragment
char c = ‘a’;
while (c++ <= 'z') putchar (xxx) ; If the required output is abcdefghijklmnopqrstuvwxyz, then xxx should be

Which of the following comments are true?

If y is of integer type then the expressions
3 * (y – 8 ) / 9 and (y – 8) / 9 * 3

If y is of integer type then the expressions
3 * (y – 8 ) / 9 and (y – 8) / 9 * 3
Yield the same value if

Integer division results in

Which of the following comments about EOF are true ?

The value of an automatic variable that is declared but not intialized will be

Choose the correct statements.

Choose the correct statements.

The const feature can be applied to

Which of the following operators takes only integer operands ?

In an expression involving II operator, evaluation

The statement
if (myptr ! = NULL)
*myptr = NULL ;
else
*myptr = NULL ;
has the same effect as the statement(s)

pick the operators that associate from the left.

pick the operators that associate from the right.

The operators ., l l , <, = , if arranged in the ascending order of precedence reads

pick the operators whose meaning is context dependent.

pick the operators that associate from the left.

The following code fragment
int x, y = 2, z, a;
x = (y *= 2) + (z = a = y):
printf (“%d”, x);

If n has the value 3, then the output of the statement printf (“%d %d”, n++, ++n);

x -= y + 1; means

Which of the following comments about the ++ operator are correct?

In standard C, trigraphs in the source program are translated

The expression 5 – .2 – 3 * 5 – 2 will evaluate to 18, if

printf (“&c”, 100);

The program fragment
int i = 263 ;
putchar (i);

Which of the following comments regarding the reading of a string, using scanf (with %s option) and gets, is true?

The following statement
printf (“%f”, 9/5);
prints

The statement
printf (“%L”, (float)9/5);
prints

Which of the following are not keywords in C?

The following program fragment
unsigned i = 1;
int j = -4;
printf (“”%u”, i + j) ;
prints

If the following program fragment (assume negative numbers are stored in 2’s complement form)
unsigned i = 1 ;
int j = -4 :
printf (“%u”, i + j) ;
prints x, then printf (“%d”, 8 * sizeof(int));
outputs an integer that is same as (log in the answers are to the base two)

Choose the statements that are syntactically correct.

The following program fragment
for (i = 3; i < 15 ; i += 3) ; printf ("%d", i) ; results in

The following program fragment
for (i = 1; i < 5 ; ++ i) if (i == 3) continue ; else printf ("%d ", i ); results in the printing of

The following program fragment
if (a = 0)
printf (“a is zero”) ;
else
printf (“a is not zero”) ;
results in the printing of

The following program fragment
if (a = 7)
printf (“a is seven”) ;
else
print f (‘a is not seven”) ;
results in the printing of

The following program fragmeng
int K = -7 ;
printf (“%d”, 0 < !k);

The following loop
for (putchar (‘c’); putchar (‘a’); putchar (‘r’))
putchar (r’);
outputs

The following loop
for (i = 1, j = 10 ; i < 6 ; ++i, --j) printf ("%dd %d ", i, j) ; prints

The following program fragment
int a = 4, b = 6 ;
printf (“%d”, a == b) ;

The following program fragment
int 1 = 4, b = 6 ;
print (“%d”, a != b) ;

The following program fragment
int a = 4, b = 6 ;
printf (‘%d”, a = b);

A possible output of the following program fragment
for (i = getchar () ; ; i = getchar ())
if (i == ‘x’) break ;
else putchar (i) ;
is

The following program
main()
{
int i = 5;
if (i == 5) return;
else printf (“i is not five”) ;
printf (“over”) ;
}
results in

The following program fragment
int i = 5;
do {putchar (i + 100) ; printf (“d%”, i–);}
while (i) ;
results in the printing of

The following program fragment
int i = 107, x = 5 ;
printf ((x > 7)? “%d”: “%c”, i ) ;
results in

Replacing > by < in the previous question results in

The following loop
while (printf (“%d”, printf (“az”)))
printf (“by”) ;

The following statements
for (i = 3 ; i < 15 ; i += 3) { printf("%d ", i) ; ++i ; } will result in the printing of

If a=9, b=5 and c=3, then the expression (a – a/b * b%c) > a%b%c evaluates to

In a for loop, if the condition is missing, then,

In a for loop, if the condition is missing, then infinite looping can be avoided by a

Choose the correct statement.

Which of the following comments about for loop are correct ?

Which of the following comments about for loop are correct?

Choose the correct answers.

Consider the following program fragment
if (a > b)
if (b > c)
sl ;
else s2 ;
s2 will be executed if

If switch feature is used , then

The switch feature

break statement can be simulated by using

The following program fragment
if (2 < 1) ; else x = (2 < 0) ? printf ("one") : print f ("four") ; printf ("%d", x) ;

Consider the following program fragment
if (a > b)
print f (“a > b”) ;
printf (“else part”) ;
printf (“a <= b") ; a <= b will be printed if

(A > b) F (b > c) T (a = 1)
F
(b = 2) F (c > d)
fig. 1.1
Which of the following correctly implements the above flow chart ?

The body of the following for loop
for (putchar(‘a’); putchar (0) ; putchar (‘c’))
putchar (‘b’) ;
will be executed

The following statement
If (a > b)
If (c > b)
print (“one”) ;
else
if (c == a) printf (“two”) ;
else printf (“three”) ;
else printf (“four”) ;

The above statement can never print

The following program fragment
int x = 4, y = x, i ;
for (i = 1; i < 4; ++i) x += x; outputs an integer that is same as

using goto inside for loop is equivalent to using

Choose the correct statements.

Consider the declaration
static char hello []=”hello”;
The output of printf (‘%s\n”, hello);
will be the same as that of

If storage class is missing in the array definition, by default it will be taken to be

The following program fragment
int x [5][5] , i, j ;
for (i = 0 ; i <5 ; ++i)
for(j = 0 ; j < 5 ; j++) x[i][j] = x[j][i] ;

Which of the following features of C is meant to provide reliable access to special memory locations ?

Consider the array definition
int num [10] = {3, 3, 3} ;
pic the correct answers

Consider the following type definition.
typedef char x[10] ;
x myArray [5] ;
What will sizeof(myArray) be? (Assume one character occupies 1 byte)

While passing an array as an actual argument, the function call must have the array name

The following program
main ( )
{
static int a [] = {7 , 8 , 9};
printf (“%d”, 2[a] + a[2]) ;
}

The parameter passing mechanism for an array is

Consider the statement
int val[2][4] = {1, 2, 3, 4, 5, 6, 7, 8} ;
4 will be the value of

The maximum number of dimension an array can have in C is

The following program fragment
int m, n, b = m = n = 8
char wer [80] ;
sprintf (wer, “%d%d%d”, m, n, b) ;
puts (wer) ;

Under which of the following condition, the size of an one-dimensional array need not be specified?

If a two dimensional array is used as a formal parameter, then

The following program
main ()
{
static char a [3] [4] = {“abcd”, “mnop”, “fghi”} ;
putchar (**a) ;
}

C does no automatic array bound checking. This is

Printf (“%10.5s”, wer) ;
outputs

printf(“%-10.5s”, wer) ;
outputs

printf (“%-10.*s”, hh, wer) ;
outputs

If n has the value 3, then the statement a[++n] = n++;

Choose the statement that best defines an array

Choose the correct statements

The order in which actual arguments are evaluated in a function call

If a global variable is of storage class static, then

Which of the following statements are correct?

The default parameter passing mechanism is

Choose the correct statements.

The storage class static can be used to

The following program
main ()
{printf(“tim”) ;
main () ; }

Consider the following program.
main ()
{ putchar )’M’) ;
first () ;
putchar (‘m’) ; }
first ()
{ ______ }
second ()
{ putchar (‘d’) ; }
if Madam is the required output, then the body of first () must be

Use of functions

Which of the following comments about wide characters is/are true?

pick the correct statements.

max is a function that returns the larger of the two integers, given as arguments. Which of the following statements finds the largest of three given numbers ?

Forward declaration is absolutely necessary

Void can be used

Any C program

The following program
main ()
{ int a = 4 ;
change (a) ;
print f (“d”, a) ;
}
change (a)
int a;
{ printf(“%d”, ++a) ;}
outputs

Choose the best answer.
storage class defines

Which of the following is true of external variables?

The following program
main ()
{
int i = 2;
{ int i = 4, j = 5;
printf (“%dd”, i, j);
}

The following program
main ()
{
inc (); inc(); inc ();
}
inc ()
{
static int x;
printf (“%d”, ++x) ;
}

printf (“ab”, “cd, “ef”) ;
prints

The expression 4 = 6 / 3 * 2 – 2 + 7 % 3 evaluates to

Consider the following program segment
i = 6720 ; j = 4;
while ((i%j) ==0)
{ i = i / j ;
j = j + l ;
}
On termination j will have the value

The output of the following program is
main ()
{ static int x[] = {1, 2, 3, 4, 5, 6, 7, 8};
int i;
for (i = 2; u < 6; ++i) x[x[i]] = x [i]; for (i = 0; i < 8; ++i) printf ("%d ", x[i]); }

main ()
{int a = 5, b = 2;
printf (“%d”, a++b);
}

The program fragment
int a = 5, b = 2;
printf (“%d”, a+++++b) ;

Consider the following program
main ()
{ int x = 2, Y = 5 ;
if (x < Y) return (x = x + y) ; else print f ("zl") ; printf ("zl") ; printf ("z2") ; } Choose the correct statements

Puts (argv[0]);

A possible output of the following program fragment
static char wer [][5] = {“harmot”, “merli”, “axari”} ;
printf ({“%d %d %d”, wer, wer[0], &er[0][0]);
is

The following program
main ()
{printf(“%u”, main);}
results in

The following program
main ()
{ int abc () ;
abc () ;
(*abc) () ;
}
int abc ()
{ printf (“come”); }

The possible output of printf(“%d %d”, ptr, ptr+1); is

The possible output of printf(“%d %d, wer [1], wer[1]+1) is

The possible output of printf (“%d %d”, wer, wer+1) ; is

putchar (* (wer[1]+1));

In which of the following case will the character ‘t’ be printed?

Choose the correct statements

feature for accessing a variable through is address is desirable because

int i = 5;
is a statement in a C program. Which of the following are true?

Choose the correct statements.

Choose the best answer.
prior to using a pointer variable

The operators > and < are meaningful when used with pointers, if

A set of names can be represented as a

If arr is a two dimensional array of 10 rows and 12 columns, then arr[5] logically points to the

While sorting a set of names, representing the names as an array of pointers is preferable to representing the names as a two dimensional array of characters because

Consider the following declaration.
int a, *b = &a, **c = &b;
The following program fragment
a = 4;
**c = 5;

The statement
int **a;

If the statement
b = (int *) **C;
is appended to the above program fragment, then

consider the tow declarations
void *voidptr ;
char *charptr ;
Which of the following assignment are syntactically correct ?

Which of the following operators can be applied to pointer variable(s)?

pointers are of