I am using Microsoft Visual Studio 2010 and the C++ language. Below are the thre

Question

I am using Microsoft Visual Studio 2010 and the C++ language. Below are the three questions.

1. Write a procedure void sort2(int& a, int& b) that swaps the values of a and b if a is greater than b and otherwise leaves a and b unchanged. For example:

Int u = 2;

Int v = 3;

Int w = 4;

Int x = 1;

Sort2(u, v); // u is still 2, v is still 3

Sort2(w, x); // w is now 1, x is now 4

2. Write a function

double get_double(string prompt)

that displays the prompt string, followed by a space, reads the floating point number in, and returns it. (In other words, write a console version of cwin.get_double.)

here is a typical usage:

salary = get_double(“please enter your salary:â€) ;

perc_raise =

get_double(“what percentage raise would you like?â€);

if there is an input error, abort the program by calling exit(1).

3. Consider the following buggy program:

Employee read_employee()

{

Cout << “please enter the name: â€;

String name;

Getline(cin, name);

Cout << “please enter the salary: “;

Double salary;

Cin << salary;

Employee r(name, salary);

Return r;

}

When you call this function once, it works fine. When you call it again in the same program, it won’t return the second employee record correctly. Write a test harness that verifies the problem. Then step through the function. Inspect the contents of the string name and the employee object r after the second call. What values do you get?

Explanation / Answer

http://ideone.com/Vahazx

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