Compilare: main.cpp: In function 'int main()': main.cpp:31:58: warning: comparison of integer expressions of different signedness: 'std::stack<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 31 | while(!c.empty() && c.top()<cif && m-c.size()>i && d>0){ | ~~~~~~~~~~^~ main.cpp:35:24: warning: comparison of integer expressions of different signedness: 'std::stack<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 35 | if(c.size()<m) { | ~~~~~~~~^~