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Accept 2 String & check whether all Characters in first String is Present in second String & Print



Accept 2 String & check whether all Characters in first String is Present in second String & Print

    #include <stdio.h>

    #include <string.h>

    #include <ctype.h>

    #include <stdlib.h>

    #define CHAR_SIZE 26

    void alphacheck(char *, int []);

    void create(char *, int[]);

    int main()

    {

        char str1[50], str2[50];

        int a1[CHAR_SIZE] = {0}, a2[CHAR_SIZE] = {0}, x;

        char str1_alpha[CHAR_SIZE], str2_alpha[CHAR_SIZE];

        printf("Enter string1: ");

        scanf("%s", str1);

        printf("Enter string2: ");

        scanf("%s", str2);

        alphacheck(str1, a1);

        alphacheck(str2, a2);

        create(str1_alpha, a1);

        create(str2_alpha, a2);

        if (strcmp(str1_alpha, str2_alpha) == 0)

        {

            printf("All characters match in %s and %s.\n", str1, str2);

            printf("The characters that match are: ");

            for (x = 0; x < strlen(str1_alpha); x++)

            {

                printf("%c, ", str1_alpha[x]);

            }

            printf("\n");

        }

        else

        {

            printf("All characters do not match in %s and %s.\n", str1, str2);

        }

        return 0;

    }

    void alphacheck(char *str, int a[])

    {

        int x, index;

        for (x = 0; x < strlen(str); x++)

        {

            str[x] = tolower(str[x]);

            index = str[x] - 'a';

            if (!a[index])

            {

                a[index] = 1;

            }

        }

    }

    void create(char *str, int a[])

    {

        int x, j = 0;

        for (x = 0; x < CHAR_SIZE; x++)

        {

            if (a[x])

            {

                str[j++] = x + 'a';

            }

        }

        str[j] = '\0';

    }