Borderou de evaluare (job #357943)

Eroare de compilare: user.cpp: In function ‘int divz(int)’: user.cpp:9:5: error: ‘thread_local’ was not declared in this scope user.cpp:9:18: error: expected ‘;’ before ‘int’ user.cpp:10:5: error: ‘sum’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:23:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:26:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int divz(int)’: user.cpp:19:1: warning: control reaches end of non-void function [-Wreturn-type]