Compilare: user.cpp: In function ‘int pos(int)’: user.cpp:30:15: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] st=a+1; ^ user.cpp: In function ‘int main()’: user.cpp:78:19: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] so<<sol<<' '<<c<<'\n'; ^ user.cpp:78:9: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] so<<sol<<' '<<c<<'\n'; ^