#include <iostream>
#include <string>
#include <conio.h>
using namespace std;

int length(const char *str)
{
    const char *temp = str;
    while (*temp) temp++;
    return (temp - str);
}


int funcstr(const char *text, const char *pattern)
{
    unsigned count = 0;
    unsigned lengthTxt = 0;
    unsigned lengthPttrn = 0;
    lengthTxt = length(text);
    lengthPttrn = length(pattern);

    if (lengthPttrn > lengthTxt) return -1;

    if ((*pattern == '\0') || (*text == '\0') && (*pattern == '\0')) return 0;
    const char *tempTxt = text;
    const char *tempPttrn = pattern;

    while (*tempTxt!= '\0')
    {

         if (*tempTxt != *tempPttrn)

        {
            count = 0;
            tempPttrn = pattern;
        }

         if (*tempTxt == *tempPttrn)

        {
            count++;
            tempPttrn++;
        }



        if (count == lengthPttrn) return (tempTxt - text ) - count + 1;

        tempTxt++;


    }

    return -1;
}

void test()
{
    (0 == funcstr("", "")) ? cout << "OK : 1" << " (" << 0 << " : " << (0 == funcstr("", "")) << " )" << endl : cout << "Failed : 1" << " (" << 0 << " : " << (0 == funcstr("", "")) << " )" << endl;
    (0 == funcstr("a", "")) ? cout << "OK : 2" << " (" << 0 << " : " << (0 == funcstr("a", "")) << " )" << endl : cout << "Failed : 2" << " (" << 0 << " : " << (0 == funcstr("a", "")) << " )" << endl;
    (0 == funcstr("a", "a")) ? cout << "OK : 3" << " (" << 0 << " : " << (0 == funcstr("a", "a")) << " )" << endl : cout << "Failed : 3" << " (" << 0 << " : " << (0 == funcstr("a", "a")) << " )" << endl;
    (-1 == funcstr("a", "b")) ? cout << "OK : 4" << " (" << -1 << " : " << (-1 == funcstr("a", "b")) << " )" << endl : cout << "Failed : 4" << " (" << -1 << " : " << (-1 == funcstr("a", "b")) << " )" << endl;

    (0 == funcstr("aa", "")) ? cout << "OK : 5" << " (" << 0 << " : " << (0 == funcstr("aa", "")) << " )" << endl : cout << "Failed : 5" << " (" << 0 << " : " << (0 == funcstr("aa", "")) << " )" << endl;
    (0 == funcstr("aa", "a")) ? cout << "OK : 6" << " (" << 0 << " : " << (0 == funcstr("aa", "a")) << " )" << endl : cout << "Failed : 6" << " (" << 0 << " : " << (0 == funcstr("aa", "a")) << " )" << endl;
    (0 == funcstr("ab", "a")) ? cout << "OK : 7" << " (" << 0 << " : " << (0 == funcstr("ab", "a")) << " )" << endl : cout << "Failed : 7" << " (" << 0 << " : " << (0 == funcstr("ab", "a")) << " )" << endl;
    (1 == funcstr("ba", "a")) ? cout << "OK : 8" << " (" << 1 << " : " << (1 == funcstr("ba", "a")) << " )" << endl : cout << "Failed : 8" << " (" << 1 << " : " << (1 == funcstr("ba", "a")) << " )" << endl;
    (-1 == funcstr("bb", "a")) ? cout << "OK : 9" << " (" << -1 << " : " << (-1 == funcstr("bb", "a")) << " )" << endl : cout << "Failed : 9" << " (" << -1 << " : " << (-1 == funcstr("bb", "a")) << " )" << endl;

    (0 == funcstr("aaa", "")) ? cout << "OK : 10" << " (" << 0 << " : " << (0 == funcstr("aaa", "")) << " )" << endl : cout << "Failed : 10" << " (" << 0 << " : " << (0 == funcstr("aaa", "")) << " )" << endl;
    (0 == funcstr("aaa", "a")) ? cout << "OK : 11" << " (" << 0 << " : " << (0 == funcstr("aaa", "a")) << " )" << endl : cout << "Failed : 11" << " (" << 0 << " : " << (0 == funcstr("aaa", "a")) << " )" << endl;
    (1 == funcstr("abc", "b")) ? cout << "OK : 12" << " (" << 1 << " : " << (1 == funcstr("abc", "b")) << " )" << endl : cout << "Failed : 12" << " (" << 1 << " : " << (1 == funcstr("abc", "b")) << " )" << endl;
    (2 == funcstr("abc", "c")) ? cout << "OK : 13" << " (" << 2 << " : " << (2 == funcstr("abc", "c")) << " )" << endl : cout << "Failed : 13" << " (" << 2 << " : " << (2 == funcstr("abc", "c")) << " )" << endl;
    (-1 == funcstr("abc", "d")) ? cout << "OK : 14" << " (" << -1 << " : " << (-1 == funcstr("abc", "d")) << " )" << endl : cout << "Failed : 14" << " (" << -1 << " : " << (-1 == funcstr("abc", "d")) << " )" << endl;

    (-1 == funcstr("a", "aa")) ? cout << "OK : 15" << " (" << -1 << " : " << (-1 == funcstr("a", "aa")) << " )" << endl : cout << "Failed : 15" << " (" << -1 << " : " << (-1 == funcstr("a", "aa")) << " )" << endl;
    (-1 == funcstr("a", "ba")) ? cout << "OK : 16" << " (" << -1 << " : " << (-1 == funcstr("a", "ba")) << " )" << endl : cout << "Failed : 16" << " (" << -1 << " : " << (-1 == funcstr("a", "ba")) << " )" << endl;
    (-1 == funcstr("a", "ab")) ? cout << "OK : 17" << " (" << -1 << " : " << (-1 == funcstr("a", "ab")) << " )" << endl : cout << "Failed : 17" << " (" << -1 << " : " << (-1 == funcstr("a", "ab")) << " )" << endl;
    (-1 == funcstr("a", "bb")) ? cout << "OK : 18" << " (" << -1 << " : " << (-1 == funcstr("a", "bb")) << " )" << endl : cout << "Failed : 18" << " (" << -1 << " : " << (-1 == funcstr("a", "bb")) << " )" << endl;


    (-1 == funcstr("a", "aaa")) ? cout << "OK : 19" << " (" << -1 << " : " << (-1 == funcstr("a", "aaa")) << " )" << endl : cout << "Failed : 19" << " (" << -1 << " : " << (-1 == funcstr("a", "aaa")) << " )" << endl;
    (-1 == funcstr("aa", "aaa")) ? cout << "OK : 20" << " (" << -1 << " : " << (-1 == funcstr("aa", "aaa")) << " )" << endl : cout << "Failed : 20" << " (" << -1 << " : " << (-1 == funcstr("aa", "aaa")) << " )" << endl;
    (0 == funcstr("aaa", "aaa")) ? cout << "OK : 21" << " (" << 0 << " : " << (0 == funcstr("aaa", "aaa")) << " )" << endl : cout << "Failed : 21" << " (" << 0 << " : " << (0 == funcstr("aaa", "aaa")) << " )" << endl;
    (0 == funcstr("aaab", "aaa")) ? cout << "OK : 22" << " (" << 0 << " : " << (0 == funcstr("aaab", "aaa")) << " )" << endl : cout << "Failed : 22" << " (" << 0 << " : " << (0 == funcstr("aaab", "aaa")) << " )" << endl;
    (1 == funcstr("baaa", "aaa")) ? cout << "OK : 23" << " (" << 1 << " : " << (1 == funcstr("baaa", "aaa")) << " )" << endl : cout << "Failed : 23" << " (" << 1 << " : " << (1 == funcstr("baaa", "aaa")) << " )" << endl;
    (1 == funcstr("baaaa", "aaa")) ? cout << "OK : 24" << " (" << 1 << " : " << (1 == funcstr("baaaa", "aaa")) << " )" << endl : cout << "Failed : 24" << " (" << 1 << " : " << (1 == funcstr("baaaa", "aaa")) << " )" << endl;
    (1 == funcstr("baaab", "aaa")) ? cout << "OK : 25" << " (" << 1 << " : " << (1 == funcstr("baaab", "aaa")) << " )" << endl : cout << "Failed : 25" << " (" << 1 << " : " << (1 == funcstr("baaab", "aaa")) << " )" << endl;
    (-1 == funcstr("abd", "abc")) ? cout << "OK : 26" << " (" << -1 << " : " << (-1 == funcstr("abd", "abc")) << " )" << endl : cout << "Failed : 26" << " (" << -1 << " : " << (-1 == funcstr("abd", "abc")) << " )" << endl;

    (2 == funcstr("ababc", "abc")) ? cout << "OK : 27" << " (" << 2 << " : " << (2 == funcstr("ababc", "abc")) << " )" << endl : cout << "Failed : 27" << " (" << 2 << " : " << (2 == funcstr("ababc", "abc")) << " )" << endl;
    (3 == funcstr("abdabc", "abc")) ? cout << "OK : 28" << " (" << 3 << " : " << (3 == funcstr("abdabc", "abc")) << " )" << endl : cout << "Failed : 28" << " (" << 3 << " : " << (3 == funcstr("abdabc", "abc")) << " )" << endl;

}


int main()
{

    std::string stroka;
    std::string pattern;
    std::cout << "Vvedite stroku :";
    std::getline(std::cin, stroka);
    std::cout << "Vvedite shablon:";
    std::getline(std::cin, pattern);

    int res = funcstr(stroka.c_str(), pattern.c_str());

    //test();

    _getch();
    return 0;
}