Meu primeiro programa em c++

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include <iostream.h>
#include <stdlib.h>
                                                                                
main ()
                                                                                
  {
      int k,soma1,soma2,soma3,num1,num2,num3;
                                                                                
        cout << "Digite o primeiro numero \n";
                                                                                
        cin >> num1;
                                                                                
        cout << "Digite o segundo numero \n";
                                                                                
        cin >> num2;
                                                                                
        cout << "Digite o terceiro numero \n";
                                                                                
        cin >> num3;
                                                                                
    soma1 = num1 + num2;
    soma2 = num2 + num3;
    soma3 = num1 + num3;
                                                                                
                                                                                
        if(soma1 > num3 && soma2 > num1 && soma3 > num2)
                                                                                
        {
                cout << "Isso e um triangulo! \n";
                k = 1;
        }
                                                                                
        if(k == 1)
                                                                                
        {
                                                                                
          if(num1 == num2 && num1 == num3 && num2 == num3)
                                                                                
            {
                                                                                
                cout << "Esse triangulo e equilatero \n";
                                                                                
            }
                                                                                
          if(num1 == num2 && num1 != num3 )
                                                                                
            {
                                                                                
                cout << "Esse triangulo e esoceles \n";
                                                                                
            }
                                                                                
          if(num2 == num3 && num2 != num1 )
                                                                                
            {
                                                                                
                cout << "Esse triangulo e esoceles \n";
                                                                                
            }
                                                                                
          if(num3 == num1 && num3 != num2 )
                                                                                
            {
                                                                                
                cout << "Esse triangulo e esoceles \n";
                                                                                
             }
                                                                                
    if(num3 != num2 && num3 != num1 && num2 != num1)
                                                                                
             {
                                                                                
                cout << "Esse triangulo e escaleno \n";
                                                                                
             }
         }
    }

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