Compilare: user.cpp: In function ‘char func(int, int, int, int, int, int)’: user.cpp:18:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(d) fr[func(a, b, d - 1, c, e + 2, f - 1)] = 1; ^ user.cpp:19:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c) fr[func(a, b, d, c - 1, e + 2, f - 1)] = 1; ^ user.cpp:20:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b) fr[func(a, b - 1, d, c + 1, e + 1, f - 1)] = 1; ^ user.cpp:21:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a) fr[func(a - 1, b + 1, d, c, e + 1, f - 1)] = 1; ^ user.cpp:24:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(b) fr[func(a, b - 1, d, c + 2, e - 1, f)] = 1; ^ user.cpp:25:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a) fr[func(a - 1, b + 1, d, c + 1, e - 1, f)] = 1; ^ user.cpp:28:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(d) fr[func(a - 1, b + 2, d - 1, c, e, f)] = 1; ^ user.cpp:29:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(c) fr[func(a - 1, b + 2, d, c - 1, e, f)] = 1; ^ user.cpp: In function ‘int main()’: user.cpp:44:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &n, &t); ^ user.cpp:47:64: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= n; i++) fscanf(fi,"%d", &x), v[x]++; ^ user.cpp: In function ‘char func(int, int, int, int, int, int)’: user.cpp:8:31: warning: ‘ans’ may be used uninitialized in this function [-Wmaybe-uninitialized] int fr[4] = {0, 0, 0, 0}, ans; ^