Compilare: user.cpp: In function ‘int solve(int&)’: user.cpp:77:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] int step = cnt[ch]; ^ user.cpp:87:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] return expr(func[ch], p, vals); ^ user.cpp:94:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] return val[ch]; ^ user.cpp: In function ‘int main()’: user.cpp:108:18: warning: unused variable ‘aux’ [-Wunused-variable] char aux = fgetc(fi); ^ user.cpp:113:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt[aux] = 1; ^ user.cpp:116:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt[aux]++; ^ user.cpp:119:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] fscanf(fi,"%s " ,func[aux] + 1); ^ user.cpp: In function ‘int fact(char*, int&, std::vector<int>)’: user.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:104:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%s " ,str + 1); ^ user.cpp:109:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&val[ch - 'a']); ^ user.cpp:119:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%s " ,func[aux] + 1); ^