std::string words = "mAn OF stEEL";
std::transform(words.begin(), words.end(), words.begin(), ToCaps<>());

#include <string>
#include <algorithm>
#include <cctype>

template <typename Type = char> struct ToCaps
{
ToCaps() : isFirst(true) {}

Type operator()(Type c)
{
return std::isspace(c) ? (isFirst = true, c) : isFirst ? (isFirst = false, std::toupper(c)) : std::tolower(c);
}

bool isFirst;
};

int main()
{
std::string words = "mAn OF stEEL";
std::transform(words.begin(), words.end(), words.begin(), ToCaps<>());
}

StringBuilder^ sb = gcnew StringBuilder(L"man OF stEEL");

for (int i = 0, isFirst = 1; i < sb->Length; ++i)
{
sb[i] = Char::IsWhiteSpace(sb[i]) ? (isFirst = 1, sb[i]) : isFirst ? (isFirst = 0, Char::ToUpper(sb[i])) : Char::ToLower(sb[i]);
}

using namespace System;
using namespace System::Text;

int main()
{
StringBuilder^ sb = gcnew StringBuilder(L"man OF stEEL");

for (int i = 0, isFirst = 1; i < sb->Length; ++i)
{
sb[i] = Char::IsWhiteSpace(sb[i]) ? (isFirst = 1, sb[i]) : isFirst ? (isFirst = 0, Char::ToUpper(sb[i])) : Char::ToLower(sb[i]);
}
}

std::string words = "mAn OF stEEL";
std::vector<std::string> swv;

boost::split(swv, words, boost::is_any_of(" "));
std::string newwords = (std::for_each(swv.begin(), swv.end(), StringTAndJ(WordToCaps))).value();

#include <string>
#include <vector>
#include <algorithm>
#include <cctype>
#include "boost/algorithm/string.hpp"

typedef void(*Func)(std::string&);

struct StringTAndJ
{
StringTAndJ(Func func = NULL, const std::string& sep = " ") : func_(func), sep_(sep) {}
void operator()(std::string& s) { if (func_) func_(s); word_.append(s).append(sep_); }
std::string value() { return word_; }

Func func_; std::string word_, sep_;
};

void WordToCaps(std::string& s)
{
std::transform(s.begin(), s.end(), s.begin(), std::tolower); s[0] = std::toupper(s[0]);
}

int main()
{
std::string words = "mAn OF stEEL";
std::vector<std::string> swv;

boost::split(swv, words, boost::is_any_of(" "));
std::string newwords = (std::for_each(swv.begin(), swv.end(), StringTAndJ(WordToCaps))).value();
}