使用boost::algorithm::ends_with(参见http://www.boost.org/doc/libs/1_34_0/doc/html/boost/algorithm/ends_with.html):

#include <boost/algorithm/string/predicate.hpp>

// works with const char* 
assert(boost::algorithm::ends_with("mystring", "ing"));

// also works with std::string
std::string haystack("mystring");
std::string needle("ing");
assert(boost::algorithm::ends_with(haystack, needle));

std::string haystack2("ng");
assert(! boost::algorithm::ends_with(haystack2, needle));

设a是一个字符串，b是你要找的字符串。使用a.s ustr获取a的最后n个字符，并将它们与b进行比较(其中n是b的长度)

或者使用std::equal (include <algorithm>)

Ex:

bool EndsWith(const string& a, const string& b) {
    if (b.size() > a.size()) return false;
    return std::equal(a.begin() + a.size() - b.size(), a.end(), b.begin());
}

你可以使用string::rfind

基于注释的完整示例:

bool EndsWith(string &str, string& key)
{
size_t keylen = key.length();
size_t strlen = str.length();

if(keylen =< strlen)
    return string::npos != str.rfind(key,strlen - keylen, keylen);
else return false;
}

让我用不区分大小写的版本扩展Joseph的解决方案(在线演示)

#include <string>
#include <cctype>

static bool EndsWithCaseInsensitive(const std::string& value, const std::string& ending) {
    if (ending.size() > value.size()) {
        return false;
    }
    return std::equal(ending.crbegin(), ending.crend(), value.crbegin(),
        [](const unsigned char a, const unsigned char b) {
            return std::tolower(a) == std::tolower(b);
        }
    );
}

bool endswith(const std::string &str, const std::string &suffix)
{
    string::size_type totalSize = str.size();
    string::size_type suffixSize = suffix.size();

    if(totalSize < suffixSize) {
        return false;
    }

    return str.compare(totalSize - suffixSize, suffixSize, suffix) == 0;
}

我知道这个问题是针对c++的，但如果有人需要一个很好的老式C函数来做到这一点:

/*  returns 1 iff str ends with suffix  */
int str_ends_with(const char * str, const char * suffix) {

  if( str == NULL || suffix == NULL )
    return 0;

  size_t str_len = strlen(str);
  size_t suffix_len = strlen(suffix);

  if(suffix_len > str_len)
    return 0;

  return 0 == strncmp( str + str_len - suffix_len, suffix, suffix_len );
}