Intermediate C++ Containers, Vector

Containers, Vector

• Create a program that declares a vector for 25 integers. Use the vector constructor to initialize it so that each element equals 0. Use a “for” loop to print out each element to confirm that it was properly set.
• Create a program that declares a vector for doubles, but do not initialize it. I.e., it will start off empty. Use a “for” loop for 50 times, and each loop, use “push_back()” to add a new value to the vector. The value should be computed based on the index.
• E.g., something like, 5.0*index or (including <cmath>), sin((double)index / 57.2958) etc. Whatever you think would be an interesting computation.
• In a separate loop, “cout” the values to confirm that they are set as you expected.
• Modify the program above so that the “cout” is in the same loop as the “push_back()” method. In that same section, “cout” the new size and new capacity of the vector.
• Modify the program above to add a “while” loop after the vector data has been set. The loop contents will include a “pop_back()” method call, plus “cout” the new size and new capacity. The “while” loop should terminate when the vector is empty.
• Create a compilation unit with the following. You’ll need it for the next assignments.
• class named T
• has two private fields, int “aInt” and double “aDouble”
• has public methods to set and get each field
• has default constructor that sets both fields to 0
• has constructor that sets “aInt” to parameter, and “aDouble” to 0
• has constructor that sets “aDouble” to parameter, and “aInt” to 0
• has constructor that set both fields to parameters
• has constructor that copies the fields from a reference to T parameter
  (e.g., T(T &t) {aInt = t.aInt; aDouble = t.aDouble;})
  (also known as a copy constructor)
• has destructor that prints out, “Destroying, aInt (value), aDouble (value)”, where “value” is set to the current field values
• Modify the first assignment to make a vector for type T. Initialize the int field to -1. “cout” both fields in the for loop.
• Modify the program above to initialize the double field to -1.5.
• Modify the program above to initialize each element to (-1, -1.5). Hint: to set both fields, you can instantiate a variable of type T, initialized to those values, and use that variable in the vector constructor.
• Modify the program above use an iterator instead of an index to loop through each element. Also in this loop, change each element according to some calculation, so that each value is different. “cout” the before and after value.
• Modify the program above to erase the middle 5 elements from the vector. I.e., remove elements 10 through 14 and leave the rest. “cout” the new vector contents, size and capacity.