For Bunny

FindStrings.c

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

#define MAX_NUM 100
#define MAX_LEN 20

char strings[MAX_NUM][MAX_LEN + 1];
char smallest[MAX_LEN+1], largest[MAX_LEN+1];

void readWords(char strings[][MAX_LEN+1], int * num)
{
    printf("Enter word: ");
    scanf("%s", strings[(*num)]);
    while(strlen(strings[*num]) != 4)
    {
        printf("Enter word: ");
        scanf("%s", strings[++(*num)]);
    }
}

void findStrings(char strings[][MAX_LEN+1], int num)
{
    int i = 0;
    while(i < num)
    {
        if(strcmp(smallest, strings[i]) > 0)
        {
            memset(smallest, 0, MAX_LEN+1);
            strncpy(smallest, strings[i], strlen(strings[i]));
        }

        if(strcmp(largest, strings[i]) < 0)
        {
            memset(largest, 0, MAX_LEN+1);
            strncpy(largest, strings[i], strlen(strings[i]));
        }
        ++i;
    }
}

int main()
{
    int numStrings = 0;

    memset(strings, 0, MAX_NUM * (MAX_LEN + 1));
    memset(smallest, 'z', MAX_LEN + 1);
    memset(largest, 0, MAX_LEN + 1);

    printf("Finding strings\n"
            "---------------\n");
    readWords(strings, &numStrings);

    findStrings(strings, numStrings);

    if(numStrings > 0)
        printf("Smallest word: %s\nLargest word: %s\n", smallest, largest);
    return 0;
}