1. For Loops
October 12, 2017

2. For Loops
A for loop repeats for a specified interval—until some condition is met.
The syntax is as follows:
for (initialization; condition; increment/decrement) {
//statement }

3. For Loops
for (initialization; condition; increment/decrement) {
//statement }
You can declare the variable inside this portion of the loop: both x = 0; and int x = 0; are valid.
Unlike with a while loop, the variable must be numerical (typically an int).

4. For Loops
for (initialization; condition; increment/decrement) {
//statement }
The loop repeats as long as this condition is true. The condition is checked at the beginning of each execution.
Examples: x < 10; x >= 5;

5. For Loops
for (initialization; condition; increment/decrement) {
//statement }
This is the same as the increment/decrement in a while loop: x++, x--, and their ilk.
The increment/decrement takes place after the loop executes.
Unlike with a while loop, don’t put this statement in the body of the loop!

6. For Loops Consider this sample for loop:
for (int x = 0; x < 5; x++) {
cout << "Hello! “; }
This code segment will output “Hello!” five times.

7. For Loops Consider this sample for loop:
for (int x = 0; x > 5; x++) {
cout << "Hello! "; }
How many times will this code segment output “Hello!”?

8. For Loops Consider this sample for loop:
for (int x = 0; x < 5; x++) {
cout << "Hello! ";
x++; }
How many times will this code segment output “Hello!”?

9. For Loops Consider this sample for loop:
for (int x = 0; x <= 5; x++) {
cout << x << " "; }
What is the output of this code?