Compilare: user.cpp: In function ‘void cerinta_1()’: user.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.find('E')==-1) ^ user.cpp: In function ‘void cerinta_2()’: user.cpp:108:11: warning: unused variable ‘are_e’ [-Wunused-variable] int i,are_e,x,y,cost,nr_e,c,e; ^ user.cpp:108:31: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int i,are_e,x,y,cost,nr_e,c,e; ^ user.cpp: In function ‘void cerinta_3()’: user.cpp:143:11: warning: unused variable ‘are_e’ [-Wunused-variable] int i,are_e,x,y,cost,nr_e,c,e; ^ user.cpp:143:33: warning: variable ‘e’ set but not used [-Wunused-but-set-variable] int i,are_e,x,y,cost,nr_e,c,e; ^ user.cpp:144:9: warning: unused variable ‘nr_min_ajutor’ [-Wunused-variable] int nr_min_ajutor=0,nr_min_e=0; ^ user.cpp:144:25: warning: unused variable ‘nr_min_e’ [-Wunused-variable] int nr_min_ajutor=0,nr_min_e=0; ^