Compilare: main.cpp: In function 'int main()': main.cpp:58:38: warning: array subscript has type 'char' [-Wchar-subscripts] while(k1>0&&pr[st1[k1]]>=pr[s[i]]) ^ main.cpp:58:48: warning: array subscript has type 'char' [-Wchar-subscripts] while(k1>0&&pr[st1[k1]]>=pr[s[i]]) ^ main.cpp: In function 'int operatie(char, int, int)': main.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type] } ^