Compilare: main.cpp: In function 'int main()': main.cpp:118:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("hashuri.in" , "r" , stdin); ^ main.cpp:119:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("hashuri.out" , "w" , stdout); ^ main.cpp:122:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d" , &n); ^ main.cpp:125:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d" , &type , &value); ^ main.cpp: In member function 'int HashTable::getpos(int)': main.cpp:55:5: warning: control reaches end of non-void function [-Wreturn-type] } ^