Introduction - If you have any usage issues, please Google them yourself
1. Please write a function void fun (char* tt, int pp []), statistics tt characters " a" to " z" 26 their number of occurrences of each letter, and then click on the pp referred to in the array. 2. The following program defines the two-dimensional array of n × n, and in the main function assignment. Please write the function fun, function, features an array of peripheral elements to calculate the average value as the function to return to the main function of s.