substring

#include<stdio.h>



void main()

{

    char str[80], search[10];

    int count1 = 0, count2 = 0, i, j, flag;
    printf("Enter a string:");
    gets(str);
    printf("Enter search substring:");
    gets(search);
    while (str[count1] != '\0')
        count1++;
    while (search[count2] != '\0')
        count2++;
    for (i = 0; i <= count1 - count2; i++)
    {
        for (j = i; j < i + count2; j++)
            {
                flag = 1;
                if (str[j] != search[j - i])
                    {
                        flag = 0;
                        break;
                        }
            }
        if (flag == 1)
            break;
    }
        if (flag == 1)
            printf("SEARCH SUCCESSFUL!");
        else
            printf("SEARCH UNSUCCESSFUL!");

}