Compilare: user.cpp: In function ‘int main()’: user.cpp:12:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:18:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nr); ^ user.cpp:92:29: warning: ‘ny’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol[cnt++] = nx * c + ny + 1; ^ user.cpp:92:25: warning: ‘nx’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol[cnt++] = nx * c + ny + 1; ^