Eroare de compilare: user.cpp:2:20: error: vector.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:10: error: ‘vector’ was not declared in this scope user.cpp:10: error: expected primary-expression before ‘int’ user.cpp:10: error: expected ‘;’ before ‘int’ user.cpp:35: error: ‘zahlen’ was not declared in this scope user.cpp:42: error: ‘zahlen’ was not declared in this scope user.cpp:9: warning: unused variable ‘anz’ user.cpp:6: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:7: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result