Identify the compiler errors, and state what is needed to eliminate the error(s).

```
#include
using namespace standard;
int main()
{
int a,4_for_Fun;
cout << Enter a;
cin >> a;
4_for_Fun = a;
return 0;
}
```

```
#include
using namespace standard; //should be std, not standard
int main()
{
int a,4_for_Fun; //name variable starting w/ 4
cout << Enter a;
cin >> a;
4_for_Fun = a; //invalid variable
return 0;
}
```