Need C$++$ help

Instructions

Write a version of the binary search algorithm that can be used to search a list of strings. $($Use the selection sort that you designed in Exercise $8$ to sort the list.$)$ Write a program to test the function and prompt the user to enter $10$ strings. The program should output the position of the string if found in the list and the following message if not:

x is not in the list

My problem lies in the rubric:

Status: FAILED!

Check: $1$

Test: Binary search on an ordered list

Reason: Unable to find $\text{'}[\text{'}$b is found at position $1\text{'}]\text{'}$ in the program's output.

Enter string $1$: Enter string $2$: Enter string $3$: Enter string $4$: Enter string $5$: Enter string $6$: Enter string $7$: Enter string $8$: Enter string $9$: Enter string $10$: Enter a string to search for: b is found at position $2$

$.$

Error : AssertionError $-$ Unable to find b is found at position $1$ in the program's output.

Status: FAILED!

Check: $2$

Test: Binary search on an unordered list

Reason: Unable to find $\text{'}[\text{'}$c is found at position $1\text{'}]\text{'}$ in the program's output.

Enter string $1$: Enter string $2$: Enter string $3$: Enter string $4$: Enter string $5$: Enter string $6$: Enter string $7$: Enter string $8$: Enter string $9$: Enter string $10$: Enter a string to search for: c is found at position $4$

$.$

Error : AssertionError $-$ Unable to find c is found at position $1$ in the program's output.

Status: PASSED!

Check: $3$

Test: Searching for a missing item

Reason: None

I could post my main.cpp but I think the one I wrote is wrong because I ask help before to fix it but it lead to nowhere and end it up realizing that it may be the entire program I wrote is the problem.

Please take your time and remember to check if its runnable, ty$.$