Simple HTML Parser (FLAG BOOL CONCEPT)

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

// Algo:
// 1.input the char
// 2.store the values that are outside the tags using ifelse.

// 3.initialise an character array and store the required elements.

void parser(char *input)
{
    bool flag = true; //BOOL FLAG CONCEPT
    int start, begin, end;
    int index = 0;
    for (int i = index; i < strlen(input) && flag; i++)
    {
        if (input[i] == '>')
        {
            start = i + 1;
            if (input[start] == ' ')
            {
                for (int j = start; j <= strlen(input) && flag; j++)
                {
                    if (input[j] != ' ')
                    {
                        begin = j;
                        flag = false;   //USED TO THROW THIS COMMAND DIRECLTY OUT OF THE MAINLOOP.
                    }
                }
            }
            else
            {
                begin = start;
                break;
            }
        }
    }
    for (int i = begin; i < strlen(input); i++)
    {
        if (input[i] == '<')
        {
            end = i - 1;
            break;
        }
    }
    for (int j = begin; j <= end; j++)
    {
        printf("%c", input[j]);
    }
    printf("\n");
}

int main()
{
    char input[500];
label:
    printf("Type your html string below:\n");
    gets(input);
    printf("Parsed statement\n");
    parser(input);
    goto label;

 
    return 0;
}
//Program By: TEJAS
Output