Compilare: main.cpp: In function 'int main()': main.cpp:52:31: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | while(k1>0&&pr[s[i]]<=pr[semn[k1]]) | ~~~^ main.cpp:52:45: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | while(k1>0&&pr[s[i]]<=pr[semn[k1]]) | ~~~~~~~^ main.cpp: In function 'int calcul(char, int, int)': main.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] 16 | } | ^