How to Use the VC ++ 6.0 Compiler

VC ++ 6.0 is compiled as an efficient. NET programming language. It combines the function language and the object-oriented programming language, and is perfect for programming, algorithms, technology, and exploratory development. Therefore, it can be interesting and attractive in the Process of use.

Compared with the maturity of VS 6.0, the VC ++ 6.0 compiler is indeed a little poor, and the most criticized is the poor template technical support. One of the following things I want to do is to introduce some small tricks to those who continue to miss VC ++ 6.0 to avoid some compiler defects of VC ++ 6.0.

According to the C ++ standard, the variable var defined here has a for loop and should be destroyed. That is to say, the following code is valid:

 
 

  
  
for (int i = 0; i < 100; ++i)  
  
  
       func();  
  
  
   for (int i = 0; i < 100; ++i)  
  
  
       func2(); 
 
 

The following code cannot be compiled:

 
 

  
  
for (int i = 0; i < 100; ++i)  
  
  
  {  
  
  
       if (has_found_it())  
  
  
       {  
  
  
           handle_find_result();  
  
  
           break;  
  
  
        }  
  
  
  }  
  
  
  if (i == 100)  
  
  
       do_not_found(); 
 
 

However, for the first part of the code, VC ++ 6.0 will report a variable I repeated definition error, while the second part of the code is compiled. To make the VC ++ 6.0 for statement seem to comply with the C ++ standard, you can do this:

 
 

  
  
if (cond)  
  
  
    if (1)  
  
  
        for (int i = 0; i < 100; ++i)  
  
  
            func1();  
  
  
    else  
  
  
        func2(); 
 
 

You will find it interesting. After define, The for statements compiled by VC ++ 6.0 fully comply with the C ++ standard! Due to compiler optimization, the Release version does not add any additional overhead. A friend who is fond of "cutting corners" may say: Well, it's a good idea. But -- why not:

 
 

  
  
Template<ClassT1, class T2> 
  
  
T1 func (T2 arg)
  
  
{
  
  
T1 var;
  
  
... // Process var
  
  
Return var;
  
  
}
  
  
 
  
  
Void test ()
  
  
{
  
  
IntResult1=Func<Int>(1 );
  
  
DoubleResult2=Func<Double>(2 );
  
  
};
 
 

Sorry, this usage is not supported by VC ++ 6.0. It is annoying that no error is prompted during VC ++ 6.0 compilation, but the generated Execution code is very problematic.

1. Differences between standard input implementation methods in C and C ++
2. How does the C ++ compiler allocate storage space for Const constants?
3. Basic Conception and method of C ++ Class Library Design
4. Several Methods for converting C ++ Language
5. How to better compile C ++ code