1. Lec 5 Nested Control Structures

2. Calculating the sum or average
num k
k < 10
Console
int sum = 0; int k = 0, num; while ( k < 5) { num = scan.nextInt(); sum = sum + num; k = k + 1; } ...println("sum is " + sum); ...println("avg is " + sum/5.0);

3. Nesting The idea of nesting is to put one thing inside of another:
nested: ( [ { } { } ] { } )
not nested: ( ) [ ] { } [ ]
NOT nested: ( [ { ) ] }

4. Nesting control structures
We have seen several control structures
do loops
while loops
if statements (including compound if statements with else if and else )
We can nest any of these structures inside another to get different behaviors

5. While loop with if inside
int i = 0; while ( i < 3) { if ( i == 0) { ...println("zero"); } else { ...println( i ); i = i + 1; i
i<3
i==0
Console

6. While loop with if inside
int i = 0, big=0, num; while ( i < 5) { num = scan.nextInt(); if ( num > 50) { big = big+1; } i = i + 1; ...println("number of big: " + big);
big
num i
i<5
Console

7. Work on Loop Drills in class
Due next Tuesday
you may finish today
these are exam style questions so make sure you master them

8. Lab 5 Guessing Game pick a random number and store it Do Loop:
get user guess
if guess is high or low, say it
when guess is correct leave loop