Suppose that s1 and s2 are two strings, given as follows:string s1("I have a dream&#3...

Suppose that s1 and s2 are two strings, given as follows:

string s1("I have a dream"); string s2("Computer Programming");

Assume that each expression is independent. What are the results of the following expressions?

(1) s1.append(s2)

(2) s1.append(s2, 9 , 7)

(3) s1.append("NEW" , 3)

(4) s1.append(3 , 'N')

(5) s1.assign(3 , 'N')

(6) s1.assign(s2, 9 , 7)

(7) s1.assign("NEWNEW" , 3)

(8) s1.assign(3 , 'N')

(9) s1.at(0)

(10) s1.1ength()

(11) s1.size()

(12) s1.capacity()

(13) s1.erase(1 , 2)

(14) s1.compare(s3)

(15) s1.compare(0 , 10 , s3)

(16) s1.c_str()

(17) s1.substr(4 , 8)

(18) s1.substr(4)

(19) s1.find('A')

(20) s1.find('a' , 9)

(21) s1.rep1ace(2 , 4 , "NEW")

(22) s1.insert(4 , "NEW")

(23) s1.insert(6 ,8 , 'N')

s1.empty()