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重载运算符“”,使之能用于两个复数相加。i
cludeiostream
fusi
g
amespacestdclassComplex
publicComplexreal0imag0ComplexdoublerdoubleirealrimagiComplexoperatorComplexc2voiddisplay
privatedoublerealdoubleimag
ComplexComplexoperatorComplexc2Complexc
crealrealc2realcimagimagc2imagretur
c
voidComplexdisplaycout
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