Introduction - If you have any usage issues, please Google them yourself
Please write the function fun, function is the function: string array will be placed in the M of string (the length of each string of not more than N), merged in order to form a new string. Function fun statement given for reference only. For example, the string array of M string AAAA BBBBBBB CC is the combined contents of the string should be: AAAABBBBBBBCC. Tip: strcat (a, b) function is copied into the string b string on the end of a string, a new string. Note: Some source code in the file APROG1.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.