Compilare: user.cpp: In function ‘int main()’: user.cpp:26:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("prim.in","r",stdin); ^ user.cpp:27:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("prim.out","w",stdout); ^ user.cpp:28:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp: In function ‘int ciur(int)’: user.cpp:20:12: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] return z; ^ user.cpp: In function ‘int main()’: user.cpp:29:33: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d",ciur(n+1)*ciur(n+1)); ^ user.cpp:29:33: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized]