Compilare: user.cpp: In function ‘int main()’: user.cpp:31:43: warning: unused variable ‘ok’ [-Wunused-variable] int t,x,y,i,ind=0,p,cx,cy,u=0,k,j,d=0,ok; ^ user.cpp:49:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t); ^ user.cpp:53:33: 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:121:25: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[k].y=p; ^