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Chapter 5: Problem 13
A(n) __________ is a special value that marks the end of a series of values.
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A(n) __________ is a sum of numbers that accumulates with each iteration of a loop.
include \(<\)
iostream \(>\) using namespace std; int main() \\{ int choice, num1, num2; do
\\{ cout \(<<\) "Enter a numbe…
#
A) / / This program displays the sum of two numbers. # include \(<\) iostream
\(>\)
using namespace std;
int main()
\\{
int choice, num1, num2;
do
\\{
cout \(<<\) "Enter a number: ";
\\[
\operatorname{cin} \quad>>\text { num1 }
\\]
cout \(<<\) "Enter another number: "
\\[
\operatorname{cin} \quad>>\text { num2 }
\\]
cout \(<<\) "Their sum is " \(<<(\text { num1 }+\text { num2 ) }<<\) endl; cout
\(<<\) "Do you want to do this again?
\\[
\begin{array}{l}
\text { cout }<<" 1=\text { yes, } 0=\text { noln" } \\
\text { cin }>>\text { choice }
\end{array}
\\]
}while (choice = 1) return 0
\\}
B) // This program displays the sum of the numbers \(1-100\) # include
Rewrite the following code, converting the while loop to a do-while loop: char doAgain \(=' y^{\prime}\) \\[ \text { int } \operatorname{sum}=0 \\] cout \( < < \) "This code will increment sum 1 or more times. \(| n "\) while ( (doAgain = = ' y') | | (doAgain = = 'Y') ) \(\\{\quad s u m++;\) cout \( < < \) "Sum has been incremented. Increment it again(y/n)? "; cin \(>>\) doAgain; \\} cout \( < < \) "Sum was incremented " \( < < \) sum \( < < "\) times. \(\backslash n "\)
Write a do-while loop that asks the user to enter two numbers. The numbers should be added and the sum displayed. The user should be asked if he or she wishes to perform the operation again. If so, the loop should repeat; otherwise it should terminate.
When the increment or decrement operator is placed before the operand (or to the operand’s left), the operator is being used in __________ mode.
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