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●The construct
cobegin
Statement1；
Statement2；
coend
means Statement1 and Statement2 are to be executed in parallel．The only two atomic actions in this construct are loading the value of a variable and storing into a variable．For the program segment
x=0；y=0；
cobegin
{x=1；y+=x；}
{y=2；x+=3；}
coend
Which of the following indicate(s)possible values for the variables when the segment finishes execution? (74) ．
Ⅰ．x=1，y=2
Ⅱ．x=1，y=3
Ⅲ．x=4，y=6
(74) A．Ⅰ
B．Ⅰ，Ⅱ
C．Ⅰ，Ⅲ
D．Ⅱ and Ⅲ
参考答案
更多 “ ●The constructcobeginStatement1；Statement2；coendmeans Statement1 and Statement2 are to be executed in parallel．The only two atomic actions in this construct are loading the value of a variable and storing into a variable．For the program segmentx=0；y=0；cobegin{x=1；y+=x；}{y=2；x+=3；}coendWhich of the following indicate(s)possible values for the variables when the segment finishes execution? (74) ．Ⅰ．x=1，y=2Ⅱ．x=1，y=3Ⅲ．x=4，y=6(74) A．ⅠB．Ⅰ，ⅡC．Ⅰ，ⅢD．Ⅱ and Ⅲ ” 相关考题
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6The construct cobegin Statement1; Statement2; coend means Statement1 and Statement2 are to be executed in parallel. The only two atomic actions in this construct are loading thevalue of a variable and storing into a variablE.For the program segment x:=0； y:=O； cobegin begin x:=l; y:=y+x; end; begin y:=2; x:=x+3; end coend Which of the following indicate(s) possible values for the variables when the segment finishes execution? Ⅰ.x=1,y=2 Ⅱ.x=1,y=3 Ⅲ.x=4,y=6A．ⅠB．Ⅰ and ⅡC．Ⅰ and ⅢD．Ⅱand Ⅲ
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Suppose we have the relation schema R( A, B, C, D)with functional dependencies; F{A→B,B→C,C→D,D→A}, then R(A,B,C,D. at least is in(73).A．1NFB．2NFC．3NFD．BCNFThe construct eobegin Statement1; Statement2; coend means Statement1 and Statement2 are to be executed in parallel. The only two atomic actions in this construct are loading the value of a variable and storing into a variable. For the p
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