Video Tutorial: Objective-C Data Types: Float

Challenge

Your challenge is to add this code to your project, fill in the question marks, and answer the question:

float account1 = 100.00;
float account2 = 0.00;
float transferAmount = 0.1;

for(int i = 0; i < 30; i++) {
    account1 -= transferAmount;
    account2 += transferAmount;
}

NSLog(@"Account 1: %???", account1);
NSLog(@"Account 2: %???", account2);
NSLog(@"Sum: %???", account1 + account2);
// Explain: what went wrong here?

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Helpful links

• Float conversion tool
• Mike Ash's Practical Floating Point discussion
• Exhaustive floating point explanation series
• Stack Overflow discussion on comparing floating point values