Borderou de evaluare (job #507631)

Compilare: user.cpp: In function 'bool putere4(int)': user.cpp:9:7: warning: unused variable 'nr2' [-Wunused-variable] user.cpp:9:13: warning: unused variable 'rad' [-Wunused-variable] user.cpp:9:19: warning: unused variable 'rad2' [-Wunused-variable] user.cpp:13:1: warning: no return statement in function returning non-void [-Wreturn-type] user.cpp: In function 'int main()': user.cpp:37:9: warning: statement has no effect [-Wunused-value] user.cpp:17:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:18:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:24:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]