// ConsoleApplication59.cpp: определяет точку входа для консольного приложения.
//

#include "stdafx.h"
#include <iostream>
#include <string>
#include <string.h>
#include <cstring>
#include <cctype>
#include <algorithm>
using namespace std;

void SplitFilename(char* source, char* path, char* name, char* extension)
{
    cout << source << "  ";
    if (path[0] !='f') cout << "NULL" << "  "; else cout << path << "  ";
    if (name[0] != 'f') cout << "NULL" << "  "; else cout << name << "  ";
    if ((path[0] != 'f') && (name[0] != 'f')) cout << "NULL" << "  ";
    else
    cout<< extension << "  ";
}

int main()
{
    char str[] = "d://folder//subfolder//file";
    int i, j, k, z, l;
    k = 0;
    char name1[100];
    char path1[100];
    char path[100];

    string g;
    for (i = 0; i<strlen(str); i++)
    {
        if ((str[i] == '.') && (str[i - 1] != '/'))
        {
            j = i; strncpy_s(path1, str, j);
        }


    }
    //cout << path1<<endl; /*d://folder//subfolder//file */

    for (i = j + 1; i<strlen(str); i++)
    {
        g =g+ str[i]; k++;
    }

    l = 1;
    j = 0;
    for (i = strlen(path1); i>0; i--)
    {
        if (path1[i] == '/')

        {
            j = i; break;
        }
    }
    l = j;

    //cout << extension<<endl; // беру всё что после . стоит с помощью отмеченой j


    if (l != 0){
        strncpy_s(path, path1, j + 1);
    }
    //cout << path <<endl;

    string b = path1;
    if (j != 0){
        b.erase(0, j + 1);
    }
    char * name = (char*)b.c_str();

    j = 0;

    for (i = 0; i<strlen(path); i++)
    {
        if (path[i] == '/') { break; }
        if (path[i] == '.') { j = i; break; }
    }
    if ((j = 0) || (strlen(name) == 0))

    {
        strncpy_s(name1, path, j);
    }


    char * extension = (char*)g.c_str();
    SplitFilename(str, path, name, extension);


    system("pause");
    return 0;
}