Introduction - If you have any usage issues, please Google them yourself
1. Enter the line of text to find out where the uppercase letters, lowercase letters, numbers, characters, spaces, and other characters of each number. . We asked to write a function to achieve statistical functions, enter a line of text in the main function, call the statistical functions and output statistics. 2. Write a function to achieve two string concatenation, the main function of the input and output strings, as requested by the character pointer variable line arguments and arguments