/in/foo.cc: In function 'bool isnumber(std::__cxx11::string)':
/in/foo.cc:7:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<k.size();i++)
~^~~~~~~~~
/in/foo.cc: In function 'long long int changeStringIntoNumber(std::__cxx11::string)':
/in/foo.cc:15:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<k.size();i++)
~^~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:76:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=aa;i<b.size();i++)
~^~~~~~~~~
/in/foo.cc:83:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=bb;i<a.size();i++)
~^~~~~~~~~
