PracticeDayFiveExercises5,6

#include <stdio.h>
#include <string.h>

int cointainsNano(const char* str)
{
    int state = 0;
    while (*str)
    {
        if (state == 0)
        {
            if (*str == 'n')
            {
                state = 1;
            }
        }
        else if (state == 1)
        {
            if (*str == 'a')
            {
                state = 2;
            }
            else if (*str == 'n')
            {

            }
            else
            {
                state = 0;
            }
        }
        else if (state == 2)
        {
            if (*str == 'n')
            {
                state = 3;
            }
            else
            {
                state = 0;
            }
        }
        else if (state == 3)
        {
            if (*str == 'o')
            {
                state = 4;
                return 1;
            }
            else if (*str == 'n')
            {
                state = 1;
            }
            else if (*str == 'a')
            {
                state = 2;
            }
            else
            {
                state = 0;
            }
        }
        str++;
    }
    return 0;
}

int countNano(const char* str)
{
    int cnt = 0;
    int state = 0;
    while (*str)
    {
        if (state == 0)
        {
            if (*str == 'n')
            {
                state = 1;
            }
        }
        else if (state == 1)
        {
            if (*str == 'a')
            {
                state = 2;
            }
            else if (*str == 'n')
            {

            }
            else
            {
                state = 0;
            }
        }
        else if (state == 2)
        {
            if (*str == 'n')
            {
                state = 3;
            }
            else
            {
                state = 0;
            }
        }
        else if (state == 3)
        {
            if (*str == 'o')
            {
                state = 4;
                cnt++;
            }
            else if (*str == 'n')
            {
                state = 1;
            }
            else if (*str == 'a')
            {
                state = 2;
            }
            else
            {
                state = 0;
            }
        }
        else if (state == 4)
        {
            if (*str == 'n')
            {
                state = 1;
            }
            else
            {
                state = 0;
            }
        }
        str++;
    }
    return cnt;
}

int main()
{
    char str1[50];
    printf("Enter string: ");
    gets(str1);
    printf("Contains nano: %s\n", cointainsNano(str1) ? "yes" : "no");
    printf("nano contains %d times\n", countNano(str1));
    return 0;
}