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Chapter wit

J. C hoose be correct s tate -ment .a) Use of goto enhances the logical clarity of a code.b) Usc of goto makes the debugging task easier.c Use goto when you wan o jump our of. nested loop.d Never usc go to.

2. \V hic,h is true of co nditio na l co m pila tio n?

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MCQs in O mpuler S C I J t C t

c b) being concise. one can be mnemonicd) none of the above

-6. The minimum number of temporary variables needed to swap the contents of two variables is a) I (b) 2 c) 3 (d) 0

7. The purpose of tbe following program fragmentb 5 b;s b - 6:b .. b - 5;

where s , b are two integers is to 3) transfer the contents of s to b b) transfer the contents of b to sc exchange swap) the contents of sand bd negate the contents of sand b

8. C on sider the functionf.ir.d (int x, int y){re uen I x < y) ? 0 : X - y);}

L et a. b be two non-negative integers. The call find {a . find a. b)} ;,81 be used tofind tbea maximum of a. bc SU , of a b

b positive dif[erence of a . b(d) m inim um of a . b

9. Let a. b be two non negat ive integers. which of the following calls, finds the positivedifference of a and b?(a) finel(a.b) find(b.a)(c) a find (a. b)

b) f i.nd a , find (a.bl)(d) b + find (a. bl

10. If integer needs two bytes of storage. then maximum value of an unsigned Integer is a) 2 - I (b) 2 - I c 216 (d) 2

*11. (f integer needs two bytes of storage, then maximum value of a signed integer is(a) 2 - I (b)2 - I c 2 (d)2

*12. printf I d . printf (. tim ) I; a) results in a syntax error b) outputs tim3 c) outputs garbage- d prints tim and termlneres abruptly

*13. If abc is we input then lbe following program fragmentchar x, v z,pr i nef ( d , scanf

a) a syntax. error c) segmentation violation

( 'ctctc , .x, y. z)}; resul ts in b) a Iaral error d) printing of 3

*14. Consider the statementsp u c c h a r ( g e t c h a r ( ) put char getchar ;

M a le ria l c hro nio ny p rawem auto rskirn

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Progmmmin w ilh 3Ifbis t h input. t e output will be(.) lUIerror 8e b thi. can , be tbe inputc ab d a b

tS. Let a. b be tw o posluve integers . h i h of the followin, options correctly relates / and 1(a) b alb 'b a\b (b) a (a/b)'b + a'b(c) b (,,\b) 'b alb (d) a (a\b) 'b + alb

16. L item l mecn~(a) a ,Iring b 3 string constant (c) cham cter (d) an alphabet

17. L ength of the siring correct i s 8(c) 6 (d) implemen ation dependem.l Wh ich of the followin g are tru e regard less of lbe inlplem enUllion ?m BCPL.(d ) C provides no feature. to manipu la te compos it e objects.

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4 CQs in O Jm pU ler Science

4

If Y is of integer type th en th e e xp re ss io ns3 y 8 9 and Iy

a) must yield the S8Jne valuec may 1may Dot yield tbe same valuei v is of integer type th en th e e xp re ss io ns

3 y S 9 and yyie ld m e- s am e value if:I, Y is an even number c) y - S is an Integral multiple of 9

8 / 9 3 b) must yield differem values d) none of the above

-23.

8 / 9 3 b) y is an odd number d) y 8 is an integral multiple of 3

2 . 1 : i Integer division results in a) truncation h) rounding c) overflow

26. which of the foUowing comments about EOF arc true ] a) Its value is defined within stdio h.b Irs value is implementation dependent.c:) Its v aJ ue c an b e- n egativ e. d) Irs value sboeld not equal the integer equivalent of any character.

27. The value of an automatic variable that is declared but not initialized will bea 0 b -I c unpredictable d none of the above

d noneof the above

28. C hoose the correc t statem ents. a) An identifier may start with an underscore. b) An identifier may end with an underscore. c) IF is a valid identifier. d) The number of significant charac ters in an identifier is implemen ta tio n d ep endent.

29. Choose th e corr ec t statements. a) Constant expressions are evaluated al compile time.b S tri ng cons ta nts can be co nca ren ared a t c om pile tim e.c Size of array must be known at compile time.d None of the above.

3 The cons feature can b e applied to a) an identifler b) an array c) tin array argument d) none of the above3J. Which of the following operators takes only integer operands?a + b) c d)

32. ln an expression involving II oper ato r. evalua tion a) will be slopped if one of its com ponents evaluates to false ) w ill be stopped i one of its components evaluates to truec ) lakes place from right to leftd takes place [rom lef, to right

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