C++

• for (variable initialization; condition; variable update) {
• Code to execute while the condition is true
• }

allows you to either declare and give a value to an already existing variable

int X=0

• tells the program that while the conditional expression is true the loop should continue to repeat itself
• x<10

• easiest way for a loop to handle changing of the variable
• x++

#include <iostream>

• using namespace std;
• cout and endl

• int main()
• {
• (int x=0; x<10; x++) {
• cout<< x << endl;
• }
• cin.get();
• }

• true- a boolean expression which could be x==1 or while (x! + 7)
• (x does not equal 7)

empty condition is not legal for a while loop as it is for a for loop

a while loop is the same for loop w/o the intialization and update section

# include <iostream>

using namespace std;

• int main()
• {
• int x=0;

• while (x<10)
• cout << x << endl;
• x++;
• }
• cin.get();
• }

If the condition is true we jump back to the beginning of the block and execute it again.

do...loop is basically a reversed while loop

do...while loop- "execute this block of code, and loop while the condition is true."

• vs.
• while loop- "loop while the conditon is true and execute this block of code"

#include <iostrea>

using namespace std;

• int main()
• {
• int x;

• x=0;
• do {
• cout<< "hello, world!\n";
• } while (x! +0);
• cin.get();
• }