Main.cc: In function ‘int main()’:
Main.cc:7:8: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations]
gets(a);
^
In file included from /usr/include/stdio.h:862:0,
from /usr/include/c++/7/cstdio:42,
from /usr/include/c++/7/ext/string_conversions.h:43,
from /usr/include/c++/7/bits/basic_string.h:6361,
from /usr/include/c++/7/string:52,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/ostream:38,
from /usr/include/c++/7/iostream:39,
from Main.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:232:1: note: declared here
gets (char *__str)
^~~~
Main.cc:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<=strlen(a)-2;i++){
~^~~~~~~~~~~~~
Main.cc:11:23: warning: comparison with string literal results in unspecified behavior [-Waddress]
if(a[i]!=' '&&a[i]!="."){
^~~
Main.cc:11:23: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
Main.cc:7:6: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result]
gets(a);
~~~~^~~