foo.cc: In function 'int main()':
foo.cc:7:8: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
gets(a);
^
In file included from /usr/include/stdio.h:862:0,
from foo.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:232:1: note: declared here
gets (char *__str)
^~~~
foo.cc:7:6: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
gets(a);
~~~~^~~
foo.cc:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &k);
~~~~~^~~~~~~~~~
/tmp/ccf4UQfi.o: In function `main':
foo.cc:(.text.startup+0x2f): warning: the `gets' function is dangerous and should not be used.
[Hydro](https://hydro.ac)提供评测服务