#include "nsString.h" int main() { nsAutoString str("HELLO WORLD"); if (str.LowerCaseEqualsLiteral("hello world")) printf("The strings are equal"); else printf("The strings are not equal"); return 0; }In the above example, an nsAutoString object is created and initialized with the string "HELLO WORLD". The LowerCaseEqualsLiteral method is called on the object with the string "hello world" as the argument. Since the strings are equal, the output will be "The strings are equal". This function can be particularly useful in cases when comparing strings that might have different cases.