CS2010 - Short Answer

Part 2

Write a for loop that iterates exactly 109 times.

for (int i=0; i<109; i++) {}

Write a for loop that prints even numbers from 0 to 198 (100 numbers).

for (int i=0; i<200; i+=2) cout << i << " ";

Write an if statement that prints “Game over” if player1 won OR turns > 30.

if (player1 || turns > 30) cout << "Game over";

Write C++ code to initialize integer array scores[50] to 0.

int scores[50] = {0};

Write one statement that prints: 32° F

(ASCII 167)

cout << "32" << char(167) << " F";

Show the contents of char array after: char letters[10] = "Dog";

while (fin >> x) {}

State De Morgan’s Law for: p && q

p && q == !( !p || !q )

{'D','o','g','\0',?, ?, ?, ?, ?, ?}

What does indentation help prevent?

• Prevents logical mistakes, improves readability.

Name the three types of programming errors.

• Syntax, Runtime, Logic.

Convert this to C++:

C = sqrt(A*A + B*B);

Write the rules for naming identifiers in C++.

• Letters/digits/_; no spaces; cannot start with digit; no keywords; case sensitive.

What library must be included to use string?

#include <string>

What is the best use of a for loop?

• When the number of iterations is known.

Write an expression that produces a random integer 0–99.

rand() % 100;