/in/foo.cc: In function 'int main()':
/in/foo.cc:49:3: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
gets(str);
^~~~
In file included from /usr/include/c++/6/cstdio:42:0,
from /in/foo.cc:1:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
^~~~
/in/foo.cc:49:11: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
gets(str);
^
In file included from /usr/include/c++/6/cstdio:42:0,
from /in/foo.cc:1:
/usr/include/stdio.h:640:14: note: declared here
extern char *gets (char *__s) __wur __attribute_deprecated__;
^~~~
/in/foo.cc:52:23: error: 'isalnum' was not declared in this scope
while(isalnum(str[j]))
^
/in/foo.cc:62:24: error: 'isalnum' was not declared in this scope
while(isalnum(str[j])) y=y*10+str[j]-'0',++j;
^