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I want to change the priority of the preprocessor define process.

see the following code:

#include <iostream> #include <sstream> #define $(x) << x << #define f(x) (#x) int main() { auto world = "universe!"; std::stringstream ss; ss << f(Hello $(world)) << std::endl; std::cout << ss.str(); return 0; } 

The code run, but the 'f' macro will always processed before the '$' macro.

The current output: Hello $(world)

Expected output: Hello universe!

Thx.

I want to change the priority of the preprocessor define process.

see the following code:

#include <iostream> #include <sstream> #define $(x) << x << #define f(x) (#x) int main() { auto world = "universe!"; std::stringstream ss; ss << f(Hello $(world)) << std::endl; std::cout << ss.str(); return 0; } 

The code run, but the 'f' macro will always processed before the '$' macro.

The current output:

Hello $(world) 

Expected output:

Hello universe! 

Thx.

I want to change the priority of the preprocessor define process.

see the following code:

#include <iostream> #include <sstream> #define $(x) << x << #define f(x) (#x) int main() { auto world = "universe!"; std::stringstream ss; ss << f(Hello $(world)) << std::endl; std::cout << ss.str(); // Out: Hello $(world) return 0; } 

The code run, but the 'f' macro will always processed before the '$' macro. Thx.

I want to change the priority of the preprocessor define process.

see the following code:

#include <iostream> #include <sstream> #define $(x) << x << #define f(x) (#x) int main() { auto world = "universe!"; std::stringstream ss; ss << f(Hello $(world)) << std::endl; std::cout << ss.str(); return 0; } 

The code run, but the 'f' macro will always processed before the '$' macro.

The current output: Hello $(world)

Expected output: Hello universe!

Thx.