超星 - Quiz for Chapter 3-4 Logical Operators - 查题吧

单选题

Whatisthevalueofthefollowingexpression?true||true&&false

A. true
B. false

单选题

Assumex=4andy=5,whichofthefollowingistrue?

A. x>5&&y>5
B. x>5||y>5
C. x<5||y<5
D. x<5&&y<5

单选题

Whichofthefollowingisthecorrectexpressionthatevaluatestotrueifthenumberxisbetween1and100orthenumberisnegative?

A. ((x<100)&&(x>1))&&(x<0)
B. (1>x>100)||(x<0)
C. ((x<100)&&(x>1))||(x<0)
D. 1<x<100&&x<0

单选题

WhichoftheBooleanexpressionsbelowhasincorrectsyntax?

A. (x>0)||(x<0)
B. (x!=0)||(x=0)
C. !(x>0)&&(x>0)
D. (true)&&(3>4)

单选题

Assumex=4andy=5,whichofthefollowingistrue?

A. !(x==4)^y!=5
B. x!=4^y==5
C. x!=5^y!=4
D. x==5^y==4

单选题

Supposex=10andy=10.Whatisxafterevaluatingtheexpression(y>=10)||(x++>10).

A. 11
B. 9
C. 10

单选题

Supposex=0andy=0whatisxafterevaluatingtheexpression(y>0)&&(1>x++).

A. 0
B. 1
C. -1

单选题

Analyzethefollowingcode:if (x < 100) && (x > 10)System.out.println("x is between 10 and 100");

A. Thestatementcompilesfine,buthasaruntimeerror.
B. Thestatementhascompileerrorsbecause(x<100)&(x>10)mustbeenclosedinsideparenthesesandtheprintln(…)statementmustbeputinsideablock.
C. Thestatementhascompileerrorsbecause(x<100)&(x>10)mustbeenclosedinsideparentheses.
D. Thestatementcompilesfine.

单选题

Analyzethefollowingtwocodefragments.(i) intx=5; if(0
A. Thefirstfragmenthasasyntaxerror.
B. Thesecondfragmenthasasyntaxerror.
C. Bothfragmentscompile,butproducedifferentresults.
D. Bothfragmentsproducethesameoutput.
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