Introduction - If you have any usage issues, please Google them yourself
Provides the input string contains only letters and asterisk. Please write the function fun, it' s function is to:* the string leading to delete all numbers, the middle and tail of the* number is not deleted. For example, the string content :******* A* BC* DEF* G****, removed, the contents of the string should be: A* BC* DEF* G**** In preparing function, not using the C language string functions. Note: Some source code in the file PROG1.C. Do not change main function and other functions in any content, only the braces in the function fun fill a number of statements you write.