101 CMPSC Introduction to Algorithmic Processes Summer 2007
LAB 2 Simple C++ Program
1. Write a program that asks the user to enter a number between 0 and 5. The program should then display the number in the following pattern. Enter a number between 0 and 5: 4 4 4 4 4 4 4 4 4 4
[sample code]
#include<iostream> using namespace std; int main() { int x; cout << "Enter a number between 0 and 5: "; cin >> x; cout cout cout cout cout cout } << << << << << << endl << endl; x << " " << x << " " << x << " " << " " << x << endl; " " << x << " " << x << " " << x << endl; x << endl; x << endl; endl;
return 0;
2. Modify your program to increase the numbers in each line by 1. Enter a number between 0 and 5: 4 4 4 5 5 6 7 7 8 8
[sample code]
#include<iostream> using namespace std; int main() { int x; cout << "Enter a number between 0 and 5: "; cin >> x; cout cout cout cout cout cout } << << << << << << endl << endl; x << " " << x << endl; " " << x + 1 << " " << x + 1 << endl; " " << x + 2 << endl; " " << x + 3 << " " << x + 3 << endl; x + 4 << " " << x + 4 << endl;
return 0;
3. [text p.38] Write a program that allows the user to enter a number of quarters, dimes, and nickels and then outputs the monetary value of the coins in cents. For example, if the user enters 2 for the number of quarters, 3 for the number of dimes, and 1 for the number of nickels, then the program should output that the coins are worth 85 cents.
[sample code]
#include<iostream> using namespace std; int main() { int quaters, dimes, nickels, total; cout << "number of quaters? "; cin >> quaters; cout << "number of dimes? "; cin >> dimes; cout << "number of nickels? "; cin >> nickels; total = 25*quaters + 10*dimes + 5*nickels; cout << "total is " << total << " cents\n"; return 0; }