asdf

/******************************************************************************

                            Online C Compiler.
                Code, Compile, Run and Debug C program online.
Write your code in this editor and press "Run" button to compile and execute it.

*******************************************************************************/

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

int main()
{
    char input[100]  = "fuck me daddy";
    char substr[3] = "dad";

    int s = 0;
    int w = 0;

    for (;s != strlen(input) && w != strlen(substr)-1; ++s)
    {
        if (input[s] != substr[w])
        {
            w = 0;
        }
        else
        {
            w++;
        }
    }

    if (w == strlen(substr)-1)
        printf("Found substring at position %d",s);
    else
        printf("not found\n");

    return 0;
}