Borderou de evaluare (job #171389)

Compilare: user.cpp: In function ‘int main()’: user.cpp:171:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:172:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:175:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:177:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:181:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int operation(int, int, char)’: user.cpp:134:1: warning: control reaches end of non-void function [-Wreturn-type] /tmp/cc1JLWzD.o: In function `main': user.cpp:(.text.startup+0xc7): warning: the `gets' function is dangerous and should not be used.