// Problem 14: Write a C program that reads in words until 
// Ctrl+D, and checks whether a word read 
// in as a command line argument appears in the main word. 
// If it appears, print it again. 

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

#define MAX 100

void find_substring(char main_word[MAX], char word[MAX]);

int main(int argc, char *argv[]) {

    char word[MAX];
    while (fgets(word, MAX, stdin) != NULL) {
        word[strlen(word) - 1] = '\0';
        find_substring(argv[1], word);
    }
    // PUT YOUR CODE HERE
    return 0;
}

void find_substring(char main_word[MAX], char word[MAX]) {
    int main_length = strlen(main_word);
    int length = strlen(word);
    int found = 0;

    for(int i = 0; i < main_length; i++) {
        found = 1;
        for (int j = 0; j < length; j++) {
            if (main_word[i + j] != word[j]) {
                found = 0;
                break;
            }
        }
        if (found) {
            printf("String found\n");
            return;
        }
    }
    printf("String not found\n");
}