Compilare: user.cpp: In function ‘int main()’: user.cpp:37:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.cpp:39:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &x[i], &y[i]); ^ user.cpp:41:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &l); ^ user.cpp:100:11: warning: ‘bn’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d ", d[bn][bx][by]); ^ user.cpp:100:11: warning: ‘by’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:100:11: warning: ‘bx’ may be used uninitialized in this function [-Wmaybe-uninitialized]