C++ MACRO that will execute a block of code and a certain command after that block.
- by Poni
void main()
{
int xyz = 123; // original value
{ // code block starts
xyz++;
if(xyz < 1000)
xyz = 1;
} // code block ends
int original_value = xyz; // should be 123
}
void main()
{
int xyz = 123; // original value
MACRO_NAME(xyz = 123) // the macro takes the code code that should be executed at the end of the block.
{ // code block starts
xyz++;
if(xyz < 1000)
xyz = 1;
} // code block ends << how to make the macro execute the "xyz = 123" statement?
int original_value = xyz; // should be 123
}
Only the first main() works.
I think the comments explain the issue.
It doesn't need to be a macro but to me it just sounds like a classical "macro-needed" case.
By the way, there's the BOOST_FOREACH macro/library and I think it does the exact same thing I'm trying to achieve but it's too complex for me to find the essence of what I need.
From its introductory manual page, an example:
#include <string>
#include <iostream>
#include <boost/foreach.hpp>
int main()
{
std::string hello( "Hello, world!" );
BOOST_FOREACH( char ch, hello )
{
std::cout << ch;
}
return 0;
}
