Compilare: user.cpp: In function ‘int expresie()’: user.cpp:16:9: warning: unused variable ‘r’ [-Wunused-variable] int r=0,ind=0,ok=0; ^ user.cpp:16:13: warning: unused variable ‘ind’ [-Wunused-variable] int r=0,ind=0,ok=0; ^ user.cpp:16:19: warning: unused variable ‘ok’ [-Wunused-variable] int r=0,ind=0,ok=0; ^ user.cpp:17:10: warning: unused variable ‘f’ [-Wunused-variable] char f='#'; ^ user.cpp:19:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int comparare()’: user.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0;p<a.size();p++){ ^ user.cpp:54:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0;p<a.size();p++){ ^ user.cpp:76:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^