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operator phân số,số phức
operator Câu 1: void swap(int *a,int *b) { int c; c=*a; *a=*b; *b=c; } void main() { clrscr(); int a,b,i,j,n; int d[50]; cout<<"\nso phan tu cua day la n="; cin>>n; for(i=1;i<=n;i++) { cout<<"nhap so d["<<i<<"]="; cin>>d[i]; } cout<<"day duoc sap sep tang dan :\n"; for(i=1;i<=n;i++) for(j=i+1;j<n+1;j++) if(d[i]>d[j]) swap(&d[i],&d[j]); for(i=1;i<=n;i++) { cout<<d[i]<<"\t"; } cout<<"\nday duoc sap sep giam dan :\n"; for(i=1;i<=n;i++) for(j=i+1;j<n+1;j++) if(d[i]<d[j]) swap(&d[i],&d[j]); for(i=1;i<=n;i++) { cout<<d[i]<<"\t"; } getch(); } Câu 2: struct PhanSo { int TuSo; int MauSo; }; PhanSo operator + (PhanSo a ,PhanSo b); PhanSo operator - (PhanSo a ,PhanSo b); PhanSo operator * (PhanSo a ,PhanSo b); PhanSo operator / (PhanSo a ,PhanSo b); int operator > (PhanSo a ,PhanSo b); int operator >=(PhanSo a ,PhanSo b); int operator < (PhanSo a ,PhanSo b); int operator <=(PhanSo a ,PhanSo b); int operator ==(PhanSo a ,PhanSo b); int operator !=(PhanSo a ,PhanSo b); PhanSo RutGonPS (PhanSo a); } void main() { clrscr(); PhanSo a,b,c; cout<<"Tu So a="; cin>>a.TuSo; cout<<"MauSo a="; cin>>a.MauSo; cout<<"Tu So b="; cin>>b.TuSo; cout<<"MauSo b="; cin>>b.MauSo; cout<<"\na="<<a.TuSo<<"/"<<a.MauSo; cout<<"\nb="<<b.TuSo<<"/"<<b.MauSo; c=a+b; c=RutGonPS(c); cout<<"\na+b="<<c.TuSo <<"/"<<c.MauSo; c=a-b; c=RutGonPS(c); cout<<"\na-b="<<c.TuSo <<"/"<<c.MauSo; c=a*b; c=RutGonPS(c); cout<<"\na*b="<<c.TuSo <<"/"<<c.MauSo; c=a/b; c=RutGonPS(c); cout<<"\na/b="<<c.TuSo <<"/"<<c.MauSo; if (a==b) cout<<"\nPS a bang PS b"; else cout<<"\nPS b khac PS a"; if (a!=b) cout<<"\nPS a khac PS b"; else cout<<"\nPS b bang PS a"; if (a>b) cout<<"\nPS a lon hon PS b"; else if(b>a) cout<<"\nPS b lon hon PS a"; else cout<<"\na=b"; if (a>=b) cout<<"\nPS a lon hon hoac bang PS b"; else cout<<"\nPS b lon hon hoac bang PS a"; if (a<b) cout<<"\nPS a be hon PS b"; else if (b<a) cout<<"\nPS b be hon PS a"; else cout<<"\nb=a"; if (a<=b) cout<<"\nPS a be hon hoac bang PS b"; else cout<<"\nPS b be hon hoac bang PS a"; getch(); } // Dinh Nghia Cac Ham PhanSo operator + (PhanSo a ,PhanSo b) { PhanSo c; c.TuSo=a.TuSo*b.MauSo+a.MauSo*b.TuSo; c.MauSo=a.MauSo*b.MauSo; return c; } PhanSo operator - (PhanSo a ,PhanSo b) { PhanSo c; c.TuSo=a.TuSo*b.MauSo-a.MauSo*b.TuSo; c.MauSo=a.MauSo*b.MauSo; return c; } PhanSo operator * (PhanSo a ,PhanSo b) { PhanSo c; c.TuSo=a.TuSo*b.TuSo; c.MauSo=a.MauSo*b.MauSo; return c; } PhanSo operator / (PhanSo a ,PhanSo b) { PhanSo c; c.TuSo=a.TuSo*b.MauSo; c.MauSo=a.MauSo*b.TuSo; return c; } int operator > (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo>b.TuSo*a.MauSo) return 1; else return 0; } int operator >= (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo>=b.TuSo*a.MauSo) return 1; else return 0; } int operator < (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo<b.TuSo*a.MauSo) return 1; else return 0; } int operator <= (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo<=b.TuSo*a.MauSo) return 1; else return 0; } int operator == (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo==b.TuSo*a.MauSo) return 1; else return 0; } int operator != (PhanSo a ,PhanSo b) { if(a.TuSo*b.MauSo!=b.TuSo*a.MauSo) return 1; else return 0; } PhanSo RutGonPS (PhanSo a) { int UCLN; int n=abs(a.TuSo),m=abs(a.MauSo); while (n != 0 && m != 0) if (n>m) n -= m; else m -= n; if (n != 0) UCLN= n; else UCLN= m; a.TuSo=a.TuSo/UCLN; a.MauSo=a.MauSo/UCLN; return a; } Câu 3: struct sophuc { double thuc; double ao; }; sophuc lapsophuc() { int x,y; sophuc tam; cout<<"\nthuc:"<<endl; cin>>x; tam.thuc=x; cout<<"\nao:"<<endl; cin>>y; tam.ao=y; return tam; } void display(sophuc a) { cout<<"("<<a.thuc<<","<<a.ao<<")"<<endl; } sophuc operator + (sophuc a,sophuc b) { sophuc tam; tam.thuc=a.thuc+b.thuc; tam.ao=a.ao+b.ao; return tam; } sophuc operator - (sophuc a,sophuc b) { sophuc tam; tam.thuc=a.thuc-b.thuc; tam.ao=a.ao-b.ao; return tam; } sophuc operator * (sophuc a,sophuc b) { sophuc tam; tam.thuc= (a.thuc*b.thuc)-(a.ao*b.ao); tam.ao= (a.thuc*b.ao)+(b.thuc*a.ao); return tam; } sophuc operator / (sophuc a,sophuc b) { sophuc tam; if((b.thuc!=0.0)&&(b.ao!=0.0)) { tam.thuc= ((a.thuc*b.thuc)+(a.ao*b.ao))/((b.thuc*b.thuc)+ (b.ao*b.ao)); tam.ao= ((b.thuc*a.ao)-(a.thuc*b.ao))/((b.thuc*b.thuc)+(b.ao*b.ao)); } return tam; } int operator == (sophuc a,sophuc b) { return ((a.thuc==b.thuc)&&(a.ao==b.ao)); } int operator != (sophuc a,sophuc b) { return ((a.thuc!=b.thuc)||(a.ao!=b.ao)); } void main() { clrscr(); sophuc x,y,z,t,s,r; cout<<"\nso phuc x:"; x=lapsophuc(); cout<<"\nx"; display(x); cout<<"\nso phuc y:"; y=lapsophuc(); cout<<"\ny"; display(y); z=x+y; cout<<"\ncong hai so phuc:"; display(z); t=x-y; cout<<"\nhieu hai so phuc:"; display(t); s=x*y; cout<<"\ntich hai so phuc:"; display(s); r=x/y; cout<<"\nthuong hai so phuc:"; display(r); if(x==y) { cout<<"\nhai so phuc bang nhau";} else { cout<< "\nhai so phuc khong bang nhau"; } if(x!=y) { cout<<"\nhai so phuc khac nhau";} else { cout<<"\nhai so phuc khong khac nhau";} getch(); } Câu 4: class sinhvien { public: char *ten; float toan , ly ,hoa ,dtb; void nhap(); void xuat(); friend void hoanvi(float *a,float *b); }; void sinhvien::nhap() { cout<<"vui long nhap cac thong tin sau :\n"; cout<<"ten sinh vien :"; cin>>ten; cout<<"\ndiem toan :"; cin>>toan; cout<<"\ndiem ly :"; cin>>ly; cout<<"\ndiem hoa :"; cin>>hoa; dtb=(toan+ly+hoa)/3; } void sinhvien::xuat() { cout<<"\nten sinh vien :"<<ten; cout<<"\ndiem trung binh :"<<dtb<<"\n"; } void main() { clrscr(); int i,j; sinhvien a[10]; for(i=0;i<=9;i++) //nhap thong tin 10 sinh vien { a[i].nhap(); } for(i=0;i<=9;i++) //sap xep theo diem trung binh giam dan for(j=i+1;j<=10;j++) if((a[i].dtb)<(a[j].dtb)) { float c; char *tam; c=a[i].dtb; tam=a[i].ten; a[i].dtb=a[j].dtb; a[i].ten=a[j].ten; a[j].dtb=c; a[j].ten=tam; } cout<<"3 SV co diem trung binh cao nhat la : \n"; for(i=0;i<=2;i++) //in ra man hinh 3 sinh vien co dtb cao nhat a[i].xuat(); getch(); } Câu 5: class hcnhat { private: int chdai,chrong; public: void nhap(); int chuvi(); int dientich(); void xuat(); }; void hcnhat::nhap() { cout<<"nhap chieu dai :"; cin>>chdai; cout<<"nhap chieu rong :"; cin>>chrong; } int hcnhat::chuvi() { return (chdai+chrong)*2; } int hcnhat::dientich() { return chdai*chrong; } void hcnhat::xuat() { cout<<"chieu dai la :"<<chdai; cout<<"\nchieu rong la :"<<chrong; cout<<"\nchu vi hcn la :"<<chuvi(); cout<<"\ndien tich hcn la :"<<dientich(); } void main() { clrscr(); hcnhat a; a.nhap(); a.xuat(); getch(); } Câu 6: class phanso { private: int tuso, mauso; public: void nhap(); friend phanso rutgon(phanso p); friend phanso cong(phanso p1,phanso p2); friend phanso tru(phanso p1, phanso p2); friend phanso nhan(phanso p1,phanso p2); friend phanso chia(phanso p1,phanso p2); void xuat(); }; void phanso::nhap() { phanso p1,p2; cout<<"nhap tu so cua ps a :"; cin>>p1.tuso; cout<<"\nnhap mau so cua ps a :"; cin>>p1.mauso; cout<<"\nnhap tu so cua ps b :"; cin>>p2.tuso; cout<<"\nnhap mau so cua ps b :"; cin>>p2.mauso; } int ucln(int x,int y) { x=abs(x);y=abs(y); if(x*y==0) return 1; while(x!=y) if(x>y) x-=y; else y-=x; return x; } phanso rutgon(phanso p) { phanso q; int x; x=ucln(p.tuso,p.mauso); q.tuso=p.tuso/x; q.mauso=p.mauso/x; return q; } phanso cong(phanso p1,phanso p2) { . MauSo; }; PhanSo operator + (PhanSo a ,PhanSo b); PhanSo operator - (PhanSo a ,PhanSo b); PhanSo operator * (PhanSo a ,PhanSo b); PhanSo operator / (PhanSo. ,PhanSo b); int operator > (PhanSo a ,PhanSo b); int operator >=(PhanSo a ,PhanSo b); int operator < (PhanSo a ,PhanSo b); int operator <=(PhanSo