/in/foo.cc: In function 'void print(int)':
/in/foo.cc:81:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while(sr[++C]=z[Z],--Z);sr[++C]='\n';
  ^~~~~
/in/foo.cc:81:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while(sr[++C]=z[Z],--Z);sr[++C]='\n';
                          ^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:240:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   mid=l+r>>1;
       ~^~