/in/foo.cc: In function 'int main()':
/in/foo.cc:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j=0;j<strlen(x);j++){
               ^
/in/foo.cc:5:7: warning: unused variable 'temp' [-Wunused-variable]
 int n,temp;
       ^