/*

This function takes two equal length c-style strings and determines

which of them has a Q. The address of the string with a Q should be

set in the output field. If neither string contains a Q, the output

address should be set to NULL.

Remember that in C, all strings are terminated with a '\0' character

so that's what you should check to see if you're at the end of the

string.

Also remember you can treat pointers like arrays so if you want to get

the 5th character of a string, you can do either of these:

char* letters = "abcde";

char second_letter = letters[1]; //fine

char second_letter_with_pointer_math = *(letters + 1); //also fine

printf("letters %c %c ", second_letter, second_letter_with_pointer_math);

You can assume:

1. The strings are equal length

2. At most one string will contain a Q

You can use C string search functions if you wish, but I think it's

easier to just write a little for loop.

Look at the test cases for example of usage

*/

void string_with_q(char *s1, char* s2, char** output) {

}

void test_string_with_q(CuTest *tc) {

char* s1 = "abQ";

char* s2 = "abc";

char* output;

string_with_q(s1, s2, &output);

CuAssertPtrEquals(tc,s1,output);

s1 = "xyz";

string_with_q(s1, s2, &output);

CuAssertPtrEquals(tc,NULL,output);

//a few more test cases in a slightly shorter style

string_with_q("12345","zzQzz",&output);

CuAssertStrEquals(tc,"zzQzz",output);

string_with_q("Q2345","zzzzz",&output);

CuAssertStrEquals(tc,"Q2345",output);

string_with_q("","",&output);

CuAssertPtrEquals(tc,NULL,output);

}