Compilare: user.cpp: In function ‘int nr(int&)’: user.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ind<=A.size() && ecif(ind)) ^ user.cpp: In function ‘int termen(int&)’: user.cpp:50:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ind<=A.size()&&einmul(ind)) ^ user.cpp: In function ‘int adunare(int&)’: user.cpp:62:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ind<=A.size()&&eadun(ind)) ^ user.cpp: In function ‘int paranteze(int&)’: user.cpp:88:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^