/in/foo.cc:12:12: warning: 'judgement' initialized and declared 'extern'
extern int judgement=0;
^~~~~~~~~
/in/foo.cc: In function 'bool isInteger(char*)':
/in/foo.cc:81:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=1;i<len;i++)
~^~~~
/in/foo.cc:86:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(k==len-1)
~^~~~~~~
/in/foo.cc:92:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<len;i++)
~^~~~
/in/foo.cc:97:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(k==len)
~^~~~~