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  1. //Bai 1
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4. class tg{
  5.     private:
  6.         float a,b,c,p;
  7.     public:
  8.         void nhap(){
  9.             cout<<"Cho tam giac abc, co:\n";
  10.             cout<<"Nhap a: "; cin>>a;
  11.             cout<<"Nhap b: "; cin>>b;
  12.             cout<<"Nhap c: "; cin >>c;
  13.             cout<<endl;
  14.         }
  15.         void xuat(){
  16.         	cout<<"("<<a<<","<<b<<","<<c<<")\n";
  17.         }
  18.         string kt(){
  19.             if(a == b && b == c && c == a ) return "La tam giac deu\n";
  20.             if(a == b || b == c || c == a ) return "La tam giac can\n";
  21.             else if(a*a + b*b == c*c || a*a == b*b + c*c || b*b ==a*a +c*c )return"La tam giac vuong\n";
  22.                 else return "La tam giac thuong.\n";
  23.         }
  24.         void tinh(){
  25.             p = (a+b+c)/2;
  26.             cout<<"Chu vi tam giac la: "<<p*2<<endl;
  27.             cout<<"Dien tich tam giac la: "<<sqrt(p*(p-a)*(p-b)*(p-c))<<endl;
  28.         }
  29. };
  30. int main(){
  31.     tg t;
  32.     t.nhap();
  33.     cout<<t.kt();
  34.     t.tinh();
  35.  
  36. }
Success #stdin #stdout 0s 5288KB
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stdout
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Cho tam giac abc, co:
Nhap a: Nhap b: Nhap c: 
La tam giac thuong.
Chu vi tam giac la: 15
Dien tich tam giac la: 9.92157
https://ideone.com/Qv87jh
language:
C++ (gcc 8.3)
created:
76 days ago
visibility:
public

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