Run id: 81716

Main.cc: In function 'int main()':
Main.cc:7:18: error: 'stlen' was not declared in this scope
 int a_len=stlen(a);
                  ^
Main.cc:9:13: error: 's_len' was not declared in this scope
  if(a[i]!=a[s_len-1-i]){
             ^