c++类与对象习题答案(4)

Fraction Temp=Sub(f);

return (Temp.numerator >=0); }

bool Fraction::operator<=(Fraction f){ Fraction Temp=Sub(f); }

Fraction Fraction::Updown(){ int p;

Fraction Temp; if (numerator!=0){ }

return Temp;

p=numerator;

numerator=denominator; denominator=p;

Temp.numerator=numerator; Temp.denominator=denominator; return (Temp.numerator <=0);} Fraction Temp=Sub(f);

return (Temp.numerator ==0); bool Fraction::operator==(Fraction f){

}

void Fraction::Set(int num,int deno){ if(deno!=0){ numerator=num;denominator=deno;

contracted(); }}

void main(){ Fraction f1(1,3),f2=2,f3,f4,f5(2,8),f6,f7(8,3),f8(8,3),f9(1,4); f4=f1.Add(f2);

f4.disp();

f6=f2.Div(f5).Div(f7); f6.disp(); f5.disp(); f6=f1.Sub(f2); f6.disp(); f9.Set(5,3); f9.disp(); f9.Updown(); f9.disp();

cout<<(f7==f8)<

cout<<(f7==f1)<f2)<

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