Compilare: user.cpp: In function ‘int main()’: user.cpp:41:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.in","r",stdin); ^ user.cpp:42:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.out","w",stdout); ^ user.cpp:46:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d%c",&n,&m,&c); ^ user.cpp:50:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&c); ^ user.cpp:64:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&c); ^ user.cpp:73:21: warning: ‘pj.poz::y’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee(pj.x,pj.y,j); ^ user.cpp:73:21: warning: ‘pj.poz::x’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:69:21: warning: ‘pr.poz::y’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee(pr.x,pr.y,r); ^ user.cpp:69:21: warning: ‘pr.poz::x’ may be used uninitialized in this function [-Wmaybe-uninitialized]