1. CS150 Introduction to Computer Science 1
Summary
Last Time:
We looked at nested loops.
Important Dates:
Assignment due on Wednesday, October 15, 2003
Exam on Friday, October 17, 2003
2/22/2019
CS150 Introduction to Computer Science 1

2. CS150 Introduction to Computer Science 1
Nested Loops
A loop within a loop.
Each time the outer loop is repeated, the inner loop is reentered, their loop control components are reevaluated, and all required iterations are performed.
2/22/2019
CS150 Introduction to Computer Science 1

3. CS150 Introduction to Computer Science 1
What’s the Output
for (int i = 0; i < n; i++) {
for (int j = 0; j < i; j++)
cout << “*”;
cout << endl; }
2/22/2019
CS150 Introduction to Computer Science 1

4. CS150 Introduction to Computer Science 1
What’s the Output
for (int i =m; i >0; i--) {
for (int j = n; j>0; j--)
cout << “*”;
cout << endl; }
2/22/2019
CS150 Introduction to Computer Science 1

5. CS150 Introduction to Computer Science 1
Problem
Write a program that outputs a rectangle of stars for any inputted width and height
2/22/2019
CS150 Introduction to Computer Science 1

6. CS150 Introduction to Computer Science 1
Problem
Write the nested ‘for’ loops that output the following: * **
***
****
*****
2/22/2019
CS150 Introduction to Computer Science 1

7. CS150 Introduction to Computer Science 1
Problem
Write a program to play the stones game. There are 13 stones and 2 players alternate taking 1, 2 or 3 stones per turn. The winner is the player to remove the last stone. The program should print out (using *’s) a picture of how many stones are left each turn.
2/22/2019
CS150 Introduction to Computer Science 1