Borderou de evaluare (job #197687)

Compilare: user.cpp: In function ‘int main()’: user.cpp:71:9: warning: unused variable ‘a1’ [-Wunused-variable] user.cpp:71:17: warning: unused variable ‘a2’ [-Wunused-variable] user.cpp:71:25: warning: unused variable ‘a3’ [-Wunused-variable] user.cpp:71:33: warning: unused variable ‘a4’ [-Wunused-variable] user.cpp:49:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:50:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:52:23: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:73:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] /tmp/ccFzwyWd.o: In function `main': user.cpp:(.text.startup+0x60): warning: the `gets' function is dangerous and should not be used.