CSC 212 Problems For Chapter 2, Spring 2004

Exercice Chapter #2 1 } } What is the output of the following program? #include <iostream.h> void main ( ) { int x=10; while ( x ) //>0 cout<< --x << “ “; } What is the output of the following program? #include <iostream.h> void main ( ) { int j; for (j=1; j<=10; j++) { if (j>5 && j<=7) cout<< j <<endl; } cout<<endl; } What is the output of the following program? #include <iostream.h> void main ( ) { int j; for (j=1; j<=10; j++) { if (j>5 || j<=7) cout<< j <<endl; } cout<<endl; } What is the output of the following program? #include <iostream.h> void main ( ) { int j; for (j=1; j<=10; j++) { if (j<5 || j>=7) cout<< j <<endl; } cout<<endl; } Exercice Chapter #2 2 What is the output of the following program? #include <iostream.h> void main ( ) { int j; for (j=1; j<=10; j++) { if (!(j<5 || j>=7)) cout<< j <<endl; } cout<<endl; } What is the output of the following program? #include <iostream.h> void main ( ) { int i, j, k; for (i=1; i<=2 ; i++) for (j=1; j<=2 ; j++) for (k=1; k<=3 ; k++) cout<<k<<” “; } What is the output of the following program? #include<iostream.h> int main( ) { int count=0; while (count++ <=5) cout<<(count%2 ? ”***” : ”---“ )<<endl; //!=0 cout<<count<<endl; return 0; } What is the output of the following program? #include<iostream.h> int main(){ int j=10,b=5; for (; b<=j; j-=1) { if (j % b==0 && j*5<=25) continue; if (j<7 || j>=9) cout<< j << endl; Exercice Chapter #2 3 } return 0; } What is the output of the following program? #include <iostream.h> void main() { for (int i = 45; i > 1; i = i / 5 ) cout<< i++<<endl; cout<<"continue"; } What is the output of the following program? #include <iostream.h> void main ( ) { int i, j, k; int x=0; for (i=1; i<=5 ; i++) for (j=1; j<=7 ; j+=2) for (k=1; k<15 ; k+=3) x++; cout << x <<endl; } What is the output of the following program? #include <iostream.h> void main() { int x; for (x=1; x<=5 ;x++) { switch(x) { case 1: cout << x << endl; case 2: cout << x << endl; case 3: cout << x << endl; break; default: cout << x+1 << endl; } } } Exercice Chapter #2 4 Problems: 1- The factorial of a nonnegative integer n is written n! (Pronounced “n factorial”) and is defined as follows: n! = n .(n-1) .(n-2). ... .1 and n! = 1 for n=0 For example 5! = 5.4.3.2.1 which is 120 Write a program that reads a nonnegative integer and computes and prints its factorial 2 - Write a a C++ program that inputs a series of 10 numbers, and determines and prints the largest of the numbers. 3-Write a program that reads in the size of the side of a square and then prints a hollow square of that size out of asterisks and blanks. Your program should work for squares of all side sizes between 1 and 20. For example, if your program reads a size of 5, it should print * * * * * * * * * * * * * * * *