Compilare: user.cpp: In function ‘int main()’: user.cpp:51:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t); ^ user.cpp:55:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&x,&y); ^ user.cpp:126:29: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[k].y=p; ^