Cho 2câu sau s1='Ha Noi' s2='Viet Nam' hãy thực hiện S1+s1
Insert (s1,s2,1)
Insert (s2,s1,4)
Delete(s2,1,6)
Delete (2,6,4)
Copy (s1,1,5)
Copy (s2,7,2)
Pos ('ie',s2)
Pos ('a',s1)
Length (s2)

3. what is the output of the following statements? temporary object1; temporary object2("rectangle", 8.5, 5); temporary object3("circle", 6, 0); temporary object4("cylinder", 6, 3.5); cout < < fixed < < showpoint < < setprecision(2); object1.print(); object2.print(); object3.print(); object4.print(); object1.set("sphere", 4.5, 0); object1.print();