C / C++ / MFC

#pragma warning(disable: 4786)

Super Hornet wrote:

Expecting favourable reply

//function that retuens the reverse of passed string
char *ReverseString(char *pszString)
{
	if (pszString) //check for valid pointer
	{
		int ilength = strlen(pszString) + 1; //length of string including '\0'
	
		for (int iIndex = ilength; iIndex > 0; iIndex--)
		{
			pszString[i] = pszString[i-1];  
		}

		pszString[0] = '\0';
      
		return &pszString[ilength];
	}
	else
	{
		return NULL;
	}
}


//program to reverse the string inplace

int main()
{
	char szString[] = "hello world";
	
	//prints the string before calling ReverseString method
	cout << "String before reversing " << szString;
 
	szString = ReverseString(szStirng); //returns the reverse of a string

	//prints the string after calling ReverseString method
	cout << "\n String after reversing " << szString;
}

std::string ReverseString(const std::string& str) {
    std::string strTmp;
 
    std::string::const_reverse_iterator iter;
    for (iter = str.rbegin(); iter != rend(); --iter) {
        strTmp += *iter;
    }
 
    return strTmp;
}

std::string ReverseString(const std::string& str) {
    std::string strTmp = str;
 
    size_t len = strTmp.length();
    for (size_t i = 0; iter < len/2; i++) {
        strTmp[i] = str[len-i];
        strTmp[len-i] = str[i];
    }
 
    return strTmp;
}

std::string ReverseString(const std::string& str) {
    return std::reverse(str.begin(), str.end());
}

int main(int argc, char* argv[]) {
    std::string s = "Hello World";
 
    std::cout << "Before reversing : " << s <<endl;
    std::cout << "After reversing  : " << ReverseString(s) << endl;
}

// Reverse it by using the Reverse alogrithm.
string Str = _T("Hello");
reverse( Str.begin(), Str.end());

Naveen wrote:

Dosen't string have a reserve() function?