Compilare: user.cpp: In function ‘int main()’: user.cpp:38:12: warning: unused variable ‘x’ [-Wunused-variable] int i,j,x,y,rx,ry; ^ user.cpp:38:14: warning: unused variable ‘y’ [-Wunused-variable] int i,j,x,y,rx,ry; ^ user.cpp:38:16: warning: unused variable ‘rx’ [-Wunused-variable] int i,j,x,y,rx,ry; ^ user.cpp:38:19: warning: unused variable ‘ry’ [-Wunused-variable] int i,j,x,y,rx,ry; ^ user.cpp:36:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bile.in","r",stdin); ^ user.cpp:37:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bile.out","w",stdout); ^ user.cpp:39:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:41:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&c[i].x,&c[i].y); ^