Compilare: user.cpp: In function ‘void Poloneza()’: user.cpp:39:8: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(strchr(op,s[i])) ^ user.cpp: In function ‘void Evaluare()’: user.cpp:59:9: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(polon[i]=='/') if(v[i-1]!=0) val=v[i-2]/v[i-1]; ^ user.cpp:62:17: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[i-2]=val; ^