Eroare de compilare: user.cpp:1:38: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix] #define k(x,i,r)a>>b;std::x##fstream("adunare."i)r ^ user.cpp:3:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main(){int b,k(i,"in",>>k(o,"out",<<a+b;})) ^ user.cpp: In function ‘int main()’: user.cpp:1:18: error: expected initializer before ‘>>’ token #define k(x,i,r)a>>b;std::x##fstream("adunare."i)r ^ user.cpp:3:14: note: in expansion of macro ‘k’ main(){int b,k(i,"in",>>k(o,"out",<<a+b;})) ^ user.cpp:1:17: error: ‘a’ was not declared in this scope #define k(x,i,r)a>>b;std::x##fstream("adunare."i)r ^ user.cpp:3:14: note: in expansion of macro ‘k’ main(){int b,k(i,"in",>>k(o,"out",<<a+b;})) ^ user.cpp:3:25: note: in expansion of macro ‘k’ main(){int b,k(i,"in",>>k(o,"out",<<a+b;})) ^