A C++ function that tests if the C string ends with a suffix

Question

bool endsWith(const char* str, const char* suffix)

Tests if the C string str ends with the specified suffix, the C string suffix.

Examples:

endsWith("hot dog", "dog")        // Should return true
endsWith("hot dog", "cat")        // Should return false
endsWith("hot dog", "doggle")     // Should return false

I have:

bool endsWith(const char* str, const char* suffix){
if(strstr(str, suffix)==(strlen(str)-strlen(suffix)))
return true;
else
return false;
}

Answer 1

Another solution not using std::string could be this:

bool strendswith(const char* str, const char* suffix)
{
    int len = strlen(str);
    int suffixlen = strlen(suffix);
    if(suffixlen > len)
    {
        return false;
    }

    str += (len - suffixlen);
    return strcmp(str, suffix) == 0;
}

Answer 2

You didn't really ask a question, but you mentioned a C++ function, so:

bool endsWith(std::string str, std::string suffix)
{
  if (str.length() < suffix.length())
    return false;

  return str.substr(str.length() - suffix.length()) == suffix;
}