c++输入四个整数按从小到大输出，可否帮我看看哪里错了，输不出来

Question

#include
using namespace std;

int main()
{
int a, b, c, d;
cin >> a >> b >> c >> d;
if (a >= b && a >= c && a >= d)
{
if (b >= c, b >= d)
{
if (c >= d)
{
cout << d << " " << c << " " << b << " " << a;
}
else
{
cout << c << " " << d << " " << b << " " << a;
}
}
else if (c >= b, c >= d)
{
if (b >= d)
{
cout << d << " " << b << " " << c << " " << a;
}
else
{
cout << b << " " << d << " " << c << " " << a;
}
}
else if (d >= c, d >= b)
{
if (c >= b)
{
cout << b << " " << c << " " << d << " " << a;
}
else
{
cout << c << " " << b << " " << d << " " << a;
}
}
}
else if (b >= a, b >= c, b >= d)
{
if (a >= c, a >= d)
{
if (c >= d)
{
cout << d << " " << c << " " << a << " " << b;
}
else
{
cout << c << " " << d << " " << a << " " << b;
}
}
else if (c >= a, c >= d)
{
if (a >= d)
{
cout << d << " " << a << " " << c << " " << b;
}
else
{
cout << a << " " << d << " " << c << " " << b;
}
}
else if (d >= c, d >= a)
{
if (c >= a)
{
cout << a << " " << c << " " << d << " " << b;
}
else
{
cout << c << " " << a << " " << d << " " << b;
}
}
}
else if (c >= a, c >= b, c >= d)
{
if (a >= b, a >= d)
{
if (b >= d)
{
cout << d << " " << b << " " << a << " " << c;
}
else
{
cout << b << " " << d << " " << a << " " << c;
}
}
else if (b >= a, b >= d)
{
if (a >= d)
{
cout << d << " " << a << " " << b << " " << c;
}
else
{
cout << a << " " << d << " " << b << " " << c;
}
}
else if (d >= b, d >= a)
{
if (b >= a)
{
cout << a << " " << b << " " << d << " " << c;
}
else
{
cout << b << " " << a << " " << d << " " << c;
}
}
}
else if (d >= a, d >= b, d >= c)
{
if (a >= b, a >= c)
{
if (b >= c)
{
cout << c << " " << b << " " << a << " " << d;
}
else
{
cout << b << " " << c << " " << a << " " << d;
}
}
else if (b >= a, b >= c)

Answer 1

if (b >= c, b >= d)
这种写法错了，改成
if (b >= c &&b >= d)