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寒食君Talk
TA貢獻(xiàn)3條經(jīng)驗(yàn) 獲得超2個(gè)贊
class rectangle{
public double length;
public double width;
public double area;
public double?perimeter；
public double Cal_area{
area=width*length;l
return area;
}
public double Cal_perimeter{
perimeter=2*(length+width);
return?perimeter;
}
}
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