Compilare: user.cpp: In function ‘void term(int)’: user.cpp:30:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] val[s[cursor]] += sig; ^ user.cpp: In function ‘int main()’: user.cpp:47:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[s[i]] = 1; ^ user.cpp:41:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s); ^ user.cpp: In function ‘void expr(int)’: user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] val[s[cursor]] += sig; ^ user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] val[s[cursor]] += sig; ^ user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] val[s[cursor]] += sig; ^ user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] val[s[cursor]] += sig; ^ user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] val[s[cursor]] += sig; ^ user.cpp:30:26: warning: array subscript is above array bounds [-Warray-bounds] user.cpp: In function ‘int main()’: user.cpp:47:15: warning: array subscript is above array bounds [-Warray-bounds] viz[s[i]] = 1; ^ user.cpp:52:14: warning: array subscript is above array bounds [-Warray-bounds] if (viz[i]) { ^ user.cpp:53:38: warning: array subscript is above array bounds [-Warray-bounds] fprintf(f, "%c %d\n", i, val[i]); ^