exercise 2-4 (the c programming language 2nd ed)

squeeze.c

#include <stdio.h>

size_t getlen (char arr[])
{
    int sz = 0;
    for (; arr[sz] != '\0'; ++sz);
    return sz;
}

void printStr (char arr[])
{
    int i = 0;
    for (; arr[i] != '\0'; ++i)
        putchar (arr[i]);
}

void squeeze (char str[], char str2[])
{
    int strCount1, strCount2 = 0, ind = 0;

    for (strCount1 = 0; str[strCount1] != '\0'; ++strCount1) {
            for (strCount2 = 0; str2[strCount2] != '\0'; ++strCount2) {
                if (str[strCount1] == str2[strCount2])
                    break;

                if (strCount2 == getlen(str2) - 1) {
                    str[ind++] = str[strCount1];
                    break;
                }

            }
    }

    str[ind] = '\0';

}

int main ()
{
    char str1[] = "www.facebook.com";
    char str2[] = "kwm";

    squeeze(str1, str2);
    printStr(str1);

    return 0;
}