4 - for & while loops

Performing the same action on an increasingly smaller subset

Infinitely repeating actions

Counting

Actions repeating until a certain event occurs

Repeat

Go

Iteration

Fabulation

for( stop ; start ; step )

for( step ; start ; stop )

for( step ; stop ; start )

for( start ; stop ; step )

for( int i=1; i<=9; i++ )

for( int i=1; i<=10; i++ )

for( int i=0; i<9; i++ )

for( int i=0; i<10; i++ )

There are two steps in this code, first adding 1 to i then assigning the result back to i

This code won’t run because that is mathematically impossible

This code won’t run because i+1 is out of range

This is a loop within a single line that happens one more time

i+1

i

i=i+1

I--

That is conventional and common, i is short for “index”

I represents you, the programmer

i is short for “intensity” as in current

It is NOT acceptable

Actions repeating until a certain event occurs

Counting

Infinitely repeating actions

Performing the same action on an increasingly smaller subset

Iteration

Go

Repeat

Fabulation

Repeat

Go

Iteration

Fabulation

while( control_expression_is_false )

while

while( start ; stop ; step )

while( control_expression_is_true )

int i=0;

while( i<9 )

{ i++; }

int i=0;

while( i<10 )

{ i++; }

int i=1;

while( i<=10 )

{ i++; }

int i=1;

while( i<=9 )

{ i++ }

The variable i is out of scope after the while loop

The for loop header line is not formatted correctly

The variable i cannot be printed to the serial monitor

There isn’t anything wrong with this loop