Based on the code segment below and by using cstring and/or cctype functions, write C++ statements to perform each of the following instructions. Note that, each question is dependent. Important: Please write C ++ statements WITHOUT blank spaces unless it is absolutely needed. Example: int num,a,b; char ac1[10] char ac2[10] = "great "; char ac3[15] = "work"; 4 int len; 1 2 13 a) Concatenates ac3 string to the end of ac2 string. b) Copy the resulting string in (a) into acl. c) Store the length of acl into len. d) Converts acl string to lowercase by filling in the blanks in the code segment below with an appropriate statement. for (int x = 0; x++)