please do in C

12.3 P3 - Ex1: Substrings Compute and output the number of ways in which we can choose two identical non-overlapping substrings of a given string read from the user Constraints .Read the string from the user . The given string will consist only of lowercase English letters (a-z). The length of the given string will be between 1 and 50, inclusive Output your result using the following format "%dn Example 1 When the input is Output must be 7 Example 2 When the input is aba Output must be Example 3 When the input is abab Output must be LAB ACTIVTY 3.1: P3-Ex1: Substrings 0/65 main.c Load default template... I #include 3int main) return 8