面的代码
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cludewi
dowsh
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cludemathh
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cludestdioh
求一元二次方程的根函数返回根的个数
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tGetRootfloatafloatbfloatcdoubleroot
doubledeltadeltasqrt
deltabb40ac
ifdelta00
f实验1Wi
dows编程基础9
retur
0无根
deltasqrtsqrtdelta
ifa00
root0bdeltasqrt20a
root1bdeltasqrt20a
else
ifb00
root0root1cb
else
retur
0
ifroot0root1
retur
1
else
retur
2
charstr80
LRESULTCALLBACKW
dProcHWNDUINTWPARAMLPARAM窗口过程
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tWINAPIWi
Mai
HINSTANCEhI
sta
ceHINSTANCEhPrevI
sta
ce
LPSTRlpCmdLi
ei
t
CmdShow
HWNDhw
d窗口句柄
MSGmsg消息
WNDCLASSw
dclass窗口类
w
dclassstyleCS_HREDRAWCS_VREDRAW
w
dclasslpf
W
dProcW
dProc
w
dclasscbClsExtra0
w
dclasscbW
dExtra0
w
dclasshI
sta
cehI
sta
ce
w
dclasshIco
LoadIco
NULLIDI_APPLICATION
w
dclasshCursorLoadCursorNULLIDC_ARROW
w
dclasshbrBackgrou
dHBRUSHGetStockObjectWHITE_BRUSH
w
dclasslpszMe
uNameNULL
w
dclasslpszClassName