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Pointer Structure Union

Q.1 what is the output of the above program code?

#include

^void^maⁱⁿ⁽⁾

{

ⁱⁿ^tⁱ⁼³^,^*^p^,*^*^p^1;

^p^=&i;

^p¹⁼^&p;

^p^riⁿ^tf⁽^“^%^d^%^d^%^d^”^{*p *}^*^p¹^*(*^p¹⁾⁾

}

⁽^a)4⁴⁴⁽^b⁾⁰⁰⁰^(c)³³³⁽^d⁾⁴³³

_Q_.2_w_h_i_ch_o_f_t_he_f_o_ll_o_w_i_n_g_i_s_t_he_c_orr_e_ct_w_ay_o_f_d_e_c_l_a_r_i_{ng a}_fl_o_a_t_p_o_i_nt_e_r:

(a)float ptr; (c)*float ptr;

(b)float *ptr;

⁽^d⁾^N^oⁿ^e^of^t^h^e^a^b^ove

Q.3 The size of the structure can be determined by

(a)size of variable name

^(b)si^z^e^o^f^(s^t^r^u^c^t^tag)

⁽^a)^Oⁿ^{ly a}⁽^b⁾^{Only b}^(c⁾^B^o^{th a and}^b⁽^d⁾^N^oⁿ^e^of^t^h^e^a^b^ove
Q.4 An entire structure or union variable can be assigned to another structure or union variable if

(a)The two variables have same composition

^(b)the^t^wo^v^arⁱ^a^b^l^e^h^a^v^e^s^a^m^e^t^y^p^e

^(c⁾^Ass^ignm^ent^o^f^oⁿ^e^s^tru^c^ture^o^{r u}ⁿⁱ^oⁿ^v^arⁱ^a^b^le^to^aⁿ^o^therⁱ^{s n}^o^t^po^ssi^b^le

⁽^d⁾^N^oⁿ^e^o^f^th^e^a^b^ove
Q.5 Find the output of the following program

^#iⁿ^c^l^u^d^e^<^s^t^d^io.^h^>

^void^maⁱⁿ⁽⁾

{

ⁱⁿ^tⁱ⁼³²^;

^c^h^ar^*^p^t^r⁼^(c^h^a^r^*)^&^i;

^p^riⁿ^tf⁽^“^%^d^”^*^p^t^r)

}

(a)1 (b)32 (c)compile error (d)None of the above

Q.6 Find the error in the following declaration?

^s^t^r^u^c^t^a^u^th^or

{

ⁱⁿ^t^ag^e^;

^s^t^r^u^c^tⁱⁿⁿ^er

{

char name[20];

};

(a)Nested structure is not allowed in C

(b)It is necessary to initialize the member variable of a structure

^(c⁾ⁱⁿⁿ^er^str^u^cture^m^u^st^ha^v^e^{a n}^a^m^e

⁽^d⁾^T^h^ere^isⁿ^{o er}^r^or
Q.7 Find the output of the following program

^#iⁿ^c^l^u^d^e^<^s^t^d^io.^h^>

^void^maⁱⁿ⁽⁾

{

int array[]={10,20,30,40};

printf(“%d” 2*array+)

}

⁽^a)60⁽^b⁾³⁰^(c)^gar^b^age^val^u^e⁽^d^)c^om^p^ile^e^r^r^o^r

Q.8 Find the output of the following program

#include

^void^maⁱⁿ⁽⁾

{

^d^o^u^b^le^f^ar*^p^,^q^;

^p^riⁿ^tf(^“^%^d^”^siz^e^o^f(p⁾^+si^z^e^o^f(q));

}

⁽^a)12⁽^b⁾⁸^(c)⁴⁽^d^)c^om^p^ile^e^r^r^o^r

Q.9 Which of the following is not user defined data type?

I:

^s^t^r^u^c^t^b^o^ok

{

};

II:

char name[10];

ⁱⁿ^t^p^ages;

^l^oⁿ^g^int^x⁼²^.³⁵^;

^I^I^I:

^en^u^m^d^a^y^{S^un^,^M^oⁿ^,Tue^,W^ed};

⁽^a)I⁽^b⁾^II^(c)^I^I^I
Q.10 Find the output of the following program

#include

^void^maⁱⁿ⁽⁾

{

^s^t^r^u^c^t^e^mp^l^oyee

{

(d)Both I and II

char name; int age; float sal;

};

^s^t^r^u^c^{t em}^p^l^oyee^e^=,^“^Ra^j^es^h^”^-

^p^riⁿ^tf⁽^“^%^d^%^f^”^e^age^e^sa^l⁾

}

(a)0, 0.000000 (b)Garbage value (c) error (d)None of the above

Q.11point out the error in the following program

^#iⁿ^c^l^u^d^e^<^s^t^d^io.^h^>

^s^t^r^u^c^t^e^m^p

{

char name[20];

ⁱⁿ^t^ag^e^;

};

^void^maⁱⁿ⁽⁾

{

emp struct xx; int a; printf(“%d” a)

}

⁽^a)Err^o^r^:ⁱⁿ^p^rⁱ^nt^f^(b)Err^o^r^:ⁱⁿ^e^m^p^s^truct^x^x^;^(c)^N^o^er^r^or⁽^d⁾^N^oⁿ^e^of^t^h^e^a^b^ove
Q.12 Which of the strcture is correct?

1: struct book

{

char name[10];

ⁱⁿ^{r pa}^g^e^s^;

};

^{2: s}^t^r^u^c^t^aa

{

char name[10];

ⁱⁿ^t^p^a^g^e^s^;

}

^{3: s}^t^r^u^c^t^aa

{

char name[10];

ⁱⁿ^t^p^a^g^e^s^;

}

⁽^a)1⁽^b⁾²^(c)³⁽^d⁾^all^{of a}^b^ove

Q.13 What is the similarity between a structure ,union and enumeration?

(a)All of them let you define new values

^{(b) All}^o^f^t^h^e^m^l^et^yo^u^d^efⁱⁿ^eⁿ^ew^d^a^ta^t^y^p^e^v^al^u^es

^(c)^All^o^f^t^h^em^let^y^o^u^defiⁿ^eⁿ^ew^p^oⁱⁿ^t^ers

^{(d) All}^o^f^t^h^e^m^l^et^yo^u^d^efⁱⁿ^eⁿ^ew^structu^r^es
Q.14 What will be the output of the program?

#include

^void^maⁱⁿ⁽⁾

{

^un^{ion var}

{

ⁱⁿ^t^a,^b^;

};

union var v;

v.a=60; v.b=70; printf(“%d\n” v a)

}

⁽^a)60⁽^b⁾⁷⁰^(c)³⁰⁽^d⁾⁰
Q.15 What will be the output of following program?

#include

^s^t^r^u^c^t^c^o^u^rse

{

int courseno;

^ch^a^r^c^o^u^rsen^a^m^e[²⁵^];

};

void main()

{

struct course c*+=,1 ”FPL”-

^,2^”^M^a^th^s^”^-

^,3^”^P^h^y^sⁱ^c^s^”^-^-

^p^riⁿ^tf(^“^%^d^”^c^*¹⁺^c^o^u^rseⁿ^o⁾

^p^riⁿ^tf(^“^%^s^\ⁿ^”⁽^*^(c⁺²⁾⁾^c^o^u^r^sena^m^e)

}

⁽^a)3^P^h^y^sⁱ^c^s⁽^b⁾²^M^a^th^s^(c)¹^F^PL

_Q_.16_P_o_i_n_t_er_s_t_o_r_e

(d)2 Physics

(a)value

ANS=(b)

(b)address (c)both value and address (d)None of above

Q 17 To declare a pointer for an “”int” type variable which if the following is correct statement

(a)int *p; (b)*int p; (c)float *p; (d)*float p;

Q.18 The name of a pointer has to follow the rules of an identifier

(a)True (b)False

Q 19 With reference to the pointers the ”*” operator returns the

(a)address (b)value (c)product (d)none of above

Q 20 With reference to the pointers the ” ” operator returns the

⁽^a)a^dd^r^e^ss⁽^b⁾^val^u^e^(c)^p^r^odu^c^t⁽^d⁾ⁿ^oⁿ^e^{of a}^b^ove
Q.21 We can have pointer to another pointer in C programming language

⁽^a)Tr^u^e⁽^b⁾^False
Q.22 Find output of the following program

#include

^void^maⁱⁿ⁽⁾

{

int a,p*; a=125; p=&a;

printf(“%d\n” a) printf(“%x\n” p) printf(“%d\n” *p)

}

⁽^a)1²⁵

^A^dd^ress^o^f^v^arⁱ^a^b^le^a

^A^dd^ress^o^f^v^arⁱ^a^b^le^b
(b)125

Address of variable a

¹²⁵

^(c)¹²⁵
125

¹²⁵

(d) Address of variable a

¹²⁵

^A^dd^ress^o^f^v^arⁱ^a^b^le^a

Q.23 Find output of the following program

^#iⁿ^c^l^u^d^e^<^s^t^d^io.^h^>

^void^maⁱⁿ⁽⁾

{

ⁱⁿ^t^a^,^p^*,^*^*^p^1;

^a=1²^5;

^p^=&a;

^p¹⁼^&p;

^p^riⁿ^tf⁽^“^%^d^\ⁿ^”^a)

^p^riⁿ^tf⁽^“^%^x^\n^”^p⁾

printf(“%x\n” p1) printf(“%d\n” *p) printf(“%x\n” *p1) printf(“%d\n” **p1)

}

(a)125 ⁽^b⁾¹²⁵

¹²⁵

125

125

¹²⁵

¹²⁵

^(c)¹²⁵

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