Exercise 0-2
Write a program that, when run, writes
This (") is a quote, and this (\) is a backslash.
Solution
We know from exercise 0-0 that to output a string to the console window, the statement should look like this:
cout << "Some text";
From the book we also know that certain special string literals must be preceded by a backslash (\) should we wish to display these correctly inside the two double quotes.
The “ (double quote) and the \ (backslash) are one of these special literals and therefore require to be preceded by a \ (backslash) – the that the character display correctly. See the book for details.
The full program therefore should look like this:
#include <iostream>
{
std::cout << "This (\") is a quote, and this (\) is a backslash" << std::endl;
return 0;
}
Note that we have precede the “ (double quote) and the \ (backslash) with a \ (backslash).
Result
Submit the program and we get the followings in the console window as required.
This (") is a quote, and this (\) is a backslash
Process returned 0 (0x0) execution time : 0.206 s
Press any key to continue.
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Shouldn’t the string literal “this () is a backslash” be written, “this (\) is a backslash”?
Oh, my comment did not print correctly. Here is what I meant to say: shouldn’t the string literal “this (\) is a backslash” be written “this (\) is a backslash”?
Aargh. My point was that it seems like the program should be using a double backslash in order for the single backslash to print.
You are right, David. Correct answer:
std::cout << “This (\”) is a quote, and this (\) is a backslash” << std::endl;