Consider the following code fragment:

string str1; str2; getline(cin,str1);

a. Write a single-statement for loop that will output each character of str1 on a separate line as follows (e.g.) :

H

e

l

l

o

b. Write a for loop to construct a string, str2 that is exactly the same as str1 but without the last character. Use indexing and the length method only. Do not use any other functions.

c. Now write a single C++ statement that will accomplish the same thing as the previous problem using only the length and substr methods (i.e., do not use indexing or loops).