Compilare: user.cpp: In function ‘int main()’: user.cpp:56:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(d[ii.x][ii.y][ii.dirr] == i){ ^ user.cpp:57:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] d[ii.x][ii.y][ii.dirr] = i; ^ user.cpp:62:125: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(iv >= 1 && iv <= n && jv >= 1 && jv <= m && a[iv][jv] == 0 && d[iv][jv][dir] > d[ii.x][ii.y][ii.dirr] + ab){ ^ user.cpp:63:64: warning: array subscript has type ‘char’ [-Wchar-subscripts] d[iv][jv][dir] = d[ii.x][ii.y][ii.dirr] + ab; ^ user.cpp:35:64: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d%d", &n, &m, &ii1, &jj1, &ii2, &jj2); ^ user.cpp:38:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i][j]); ^