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*NUMERO MAYOR CON CONECTORES LOGICOS

programacion utilizando c++

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#include "stdafx.h"

using namespace System;#include <iostream>
using std::cin;
using std::cout;
using std::endl;
#include <cmath>
//prototipos
double in_lados();
void mayor(double, double, double);
//variables
double n1,n2, n3;

int main(array<System::String ^> ^args)
{
cout<<"\n\t\t MAYOR DE TRES NUMEROS";
in_lados();
mayor(n1, n2, n3);
Console::Read();
return 0;
}
doublein_lados()
{
cout<<"\n\n\n INGRESE PRIMER NUMERO: \t";
cin>>n1;
cout<<"\n INGRESE SEGUNDO NUMERO: \t";
cin>>n2;
cout<<"\n INGRESE TERCER NUMERO: \t";cin>>n3;
cout<<"\n\n\t";
return n1, n2, n3;
}
void mayor(double a, double b, double c)
{
if ((a == b && b == c) || (a>b && a==c) || (b>a && b==c) || (a>c&& a==b))
{
cout<<"NO EXISTE MAYOR\n\t ";
if(a == b && b == c)
cout<<a<<" = "<<b<<" = "<<c;
if(a>b && a==c)cout<<a<<" = "<<c<<" > "<<c;
if(b>a && b==c)
cout<<c<<" = "<<b<<" > "<<a;
if(a>c && a==b)cout<<a<<" = "<<b<<" > "<<c;
}
else
{
cout<<"EL NUMERO MAYOR ES: ";
if (a>b && a>c)
{
cout<<"EL PRIMERO\n\t "<<a<<" >"<<b<<" y "<<a<<" > "<<c;
}
if (b>c && b>a)
{
cout<<"EL SEGUNDO\n\t "<<b<<" > "<<a<<" y"<<b<<" > "<<c;
}
if (c>a && c>b)
{
cout<<"EL TERCERO\n\t "<<c<<" > "<<a<<" y "<<c<<" > "<<b;
}
}
}...