Compilare: user.cpp: In function ‘int main()’: user.cpp:41:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f,"%d%d%d",&T,&n,&m); ^ user.cpp:43:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i=1;i<=n;++i) fscanf (f,"%s%*c",v[i]+1); ^ user.cpp:88:37: warning: ‘scolor’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf (g,"%d %d\n%c",sx,sy,scolor); ^