Eroare de compilare: user.cpp: In function ‘int nr(int&)’: user.cpp:38:40: error: ‘adunare’ was not declared in this scope if(A[ind=='(']){int r=adunare(++ind),++ind,return r;} ^ user.cpp:38:25: warning: unused variable ‘r’ [-Wunused-variable] if(A[ind=='(']){int r=adunare(++ind),++ind,return r;} ^ user.cpp:40:23: 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:51:24: 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:63:23: 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:75:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^