Compilare: main.cpp: In function 'int main()': main.cpp:60:42: warning: array subscript has type 'char' [-Wchar-subscripts] 60 | while(k1>0&&pr[expr[i]]<=pr[semn[k1]]) | ~~~~~~^ main.cpp:60:56: warning: array subscript has type 'char' [-Wchar-subscripts] 60 | while(k1>0&&pr[expr[i]]<=pr[semn[k1]]) | ~~~~~~~^ main.cpp: In function 'int calcul(char, int, int)': main.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] 24 | } | ^