Выделить из строки имя файла без расширения

#include<iostream>
#include <string>
#include<math.h>
#include<windows.h>
#include<string.h>
#include<stdio.h>
#include <ctype.h>
#include <fstream>
 
using namespace std;
 
char* name ( char name[15]);
 
int main()
{
 char s[15]="C:\temp\file.txt";
    cout << name (s);
 
    return 0;
}
char* name ( char name[15])
{
    char b;
    name = "C:\temp\file.txt";
    int n=strlen(name);
    for (int i=0;i<n;i++)
    if (name[i]=='.' )
        b=name[i-4];
 
}

#include<iostream>
 
int main()
{
    char str[17] = "C:\\temp\\file.txt";
    char *s1 = strrchr(str,'\\');
    char *s2 = strrchr(str,'.');
    char *name = new char[s2 - s1];
    memcpy(name, s1 + 1, s2 - s1 - 1);
    name[s2 - s1 - 1] = '\0';
    puts(name);
    system("pause");
    delete []name;
    return 0;
}

#include<iostream>
 
char *Name(char *Directory)
{
    char *s1 = strrchr(Directory,'\\');
    char *s2 = strrchr(Directory,'.');
    char *name = new char[s2 - s1];
    memcpy(name, s1 + 1, s2 - s1 - 1);
    name[s2 - s1 - 1] = '\0';
    return name;
}
 
int main()
{
    char str[17] = "C:\\temp\\file.txt";
    char *name = Name(str);
    puts(name);
    system("pause");
    delete []name;
    return 0;
}

#include <iostream>
char *GetFileName(char *path)
{
    char *filename = new char[32];
    int i = strlen(path);
    int j = 0;
    while (path[--i] != '.');
    while (path[--i] != '\\')
        filename[j++] = path[i];
    filename[j] = '\0';
    return filename = strrev(filename); 
}
 
int main()
{
    char *path = "c:\\TestFolder\\123\\TestFile.txt";
    std::cout << GetFileName(path) << "\n";
    return system("pause");
}