c++简单作业·明天交·帮帮我

4. Give meaningful identifiers for the following variables. (a) A variable to store the first name of a student. (b) A variable to store the discounted price of an item. (c) A variable to store the number of juice bottles. (d) A variable to store the number of miles traveled. (e) A variable to store the highest test score.5. Consider the following program segment //include statement(s) //using namespace statement int main() { //variable declaration //executable statements //return statement }(a) Write C++ statements that include the header files iostream. (b) Write a C++ statement that allows you to use cin, cout, and endl without the prefix std::. (c) Write C++ statements that declare the following variables num1, num2, num3, and average of type int. (d) Write C++ statements that store 125 into num1, 28 into num2, and -25 into num3. (e) Write a C++ statement that scores the average of num1, num2, and num3, into average. (f) Write C++ statements that output the values of num1, num2, num3, and average. (g) Compile and run your program