Compilare: main.cpp: In function 'int getNr()': main.cpp:52:25: warning: array subscript has type 'char' [-Wchar-subscripts] if(isDigit[s[crChar]] == 0) ^ main.cpp:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(crChar < s.size() && isDigit[s[crChar]]) ~~~~~~~^~~~~~~~~~ main.cpp:56:49: warning: array subscript has type 'char' [-Wchar-subscripts] while(crChar < s.size() && isDigit[s[crChar]]) ^ main.cpp: In function 'int getVar()': main.cpp:68:24: warning: array subscript has type 'char' [-Wchar-subscripts] if(isChar[s[crChar]] != 0) ^ main.cpp:70:31: warning: array subscript has type 'char' [-Wchar-subscripts] var = isChar[s[crChar]]; ^ main.cpp: In function 'void getCoef()': main.cpp:80:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(crChar < s.size()) ~~~~~~~^~~~~~~~~~