Compilare: user.cpp: In function ‘void fill(char, char, char, int)’: user.cpp:11:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[x][y]=0; ^ user.cpp:11:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] a[x][y]=0; ^ user.cpp: In function ‘int main()’: user.cpp:41:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] fill(c[p].lin, c[p].col, a[c[p].lin][c[p].col], c[p].cost); ^ user.cpp:41:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] fill(c[p].lin, c[p].col, a[c[p].lin][c[p].col], c[p].cost); ^ user.cpp:26:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.in", "r", stdin); ^ user.cpp:27:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.out", "w", stdout); ^ user.cpp:28:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d", &n, &m, &pl, &pc, &cl, &cc); ^ user.cpp:31:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &temp); ^