Compilare: main.cpp: In function 'int parse_f()': main.cpp:70:28: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | r = parse_add(fct[fct_ch[f]], ind, param); | ^ main.cpp: In function 'int parse_param()': main.cpp:92:22: warning: array subscript has type 'char' [-Wchar-subscripts] 92 | r = var[read_char(s, s_ind)]; | ~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:163:9: warning: array subscript has type 'char' [-Wchar-subscripts] 163 | var[ch] = v; | ^~ main.cpp:175:15: warning: array subscript has type 'char' [-Wchar-subscripts] 175 | fgets(fct[fct_nr], MAX_CHAR, fin); | ^~~~~~ main.cpp:176:12: warning: array subscript has type 'char' [-Wchar-subscripts] 176 | fct_ch[f] = fct_nr++; | ^ main.cpp:152:10: warning: unused variable 'r' [-Wunused-variable] 152 | int v, r; | ^