运行 ID: 40484

Main.cc: In function ‘int main()’:
Main.cc:7:2: error: ‘strlwr’ was not declared in this scope
  strlwr(a);
  ^~~~~~
Main.cc:7:2: note: suggested alternative: ‘strstr’
  strlwr(a);
  ^~~~~~
  strstr
Main.cc:6:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s%s",a,b);
  ~~~~~^~~~~~~~~~~~