Compilare: user.cpp: In function ‘int main()’: user.cpp:66:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] combinations[i][j] = combinations[i-1][j] + combinations[i-1][j-1]; ^ user.cpp:66:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] combinations[i][j] = combinations[i-1][j] + combinations[i-1][j-1]; ^ user.cpp:66:53: warning: array subscript has type ‘char’ [-Wchar-subscripts] combinations[i][j] = combinations[i-1][j] + combinations[i-1][j-1]; ^ user.cpp:78:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] multiply(combinations[i][t], aux); ^ user.cpp:78:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] multiply(combinations[i][t], aux); ^ user.cpp:79:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] addUp(d[i][j], aux); } ^ user.cpp:79:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] addUp(d[i][j], aux); } ^ user.cpp:83:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] addUp(answer, d[n][j]); ^ user.cpp:90:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] dig[r++] = answer.s[a] % 10; ^ user.cpp:55:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gard2.in", "r", stdin); ^ user.cpp:56:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gard2.out", "w", stdout); ^ user.cpp:61:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^