运行 ID: 48599

Main.cc: In function ‘int main()’:
Main.cc:9:2: error: ‘strlwr’ was not declared in this scope
  strlwr(a);
  ^~~~~~
Main.cc:9:2: note: suggested alternative: ‘strstr’
  strlwr(a);
  ^~~~~~
  strstr
Main.cc:11:15: error: cannot convert ‘std::__cxx11::string {aka std::__cxx11::basic_string}’ to ‘const char*’ for argument ‘1’ to ‘int strcmp(const char*, const char*)’
  if(strcmp(a,b)==0) cout<<"=";
               ^
Main.cc:12:20: error: cannot convert ‘std::__cxx11::string {aka std::__cxx11::basic_string}’ to ‘const char*’ for argument ‘1’ to ‘int strcmp(const char*, const char*)’
  else if(strcmp(a,b)<0) cout<<"<" ;
                    ^