Variables
-Names of place to store values
Assignment
- Storing the value of an expression into a variable.
Output
Input
Repetition
Selection
-Making a choice to execute or skip a statement (or group of statements)
Selection
-Choose to execute one statement (or group of statements) or another statement (or group of statements)
NumberRead number1 number2
3
55 70 55 70
2 1 1 2
33 33 33 33
Data
3
55 70
2 1
33 33
numberOfPairs
3
C++ (AHHHHHHHHHHHHHHHHHHHHH)
#include <iostream>
using namespace std;
void main ()
{
int numberread, number1, number2, numberofpairs;
cout << "How many pairs of values are to be read";
cin >> numberofpairs;
numberread=0;
while(numberread < numberofpairs)
{
cout << "Enter two numbers separated by a blank; press return";
cin >> number1;
cin >> number2;
if (number1 < number2)
cout << number1 << " " << number2;
else
cout << number2 << " " << number1;
numberread = numberread + 1;
}
}
Top-Down Design
Top-Down Design
-Problem-Solving technique in which the problem is divided into subproblems; the process is applied to each subproblem.
Modules
-Self-contained collection of steps, that solve a proble or subproblem
Abstract Ste-
-An algorithmic step containing unspecified details
Concrete Step
-An algortithm step in which all details are specified.
Problem
-Create a list that....etc