Compilare: user.cpp: In function ‘void Eliminate()’: user.cpp:48:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<Array.size();i++) ^ user.cpp:54:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Array.size();i++) ^ user.cpp:46:9: warning: unused variable ‘length’ [-Wunused-variable] int length=Array.size(); ^ user.cpp: In function ‘void Read()’: user.cpp:33:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:34:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&M); ^ user.cpp:38:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n" , &x , &y ); ^ user.cpp: In function ‘void simulateRoad()’: user.cpp:66:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c %d\n" , &direction , &distance ); ^ user.cpp: In function ‘int main()’: user.cpp:80:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zc.in", "r", stdin); ^ user.cpp:81:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zc.out", "w", stdout); ^