/
Correction_ObjectiveC.m
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Correction_ObjectiveC.m
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//
// Objective-C Correction
//
// Created by Zane Helton on 11/13/15.
// Copyright (c) 2016 Zane Helton. All rights reserved.
//
// Reviewed by:
// - No one yet.
//
#import <Foundation/Foundation.h>
@interface Correction : NSObject
@end
@implementation Correction
// Part Two:
// FIXME: Functions - Ascii
// Create a function that returns nothing and which doesn't takes any parameter. It should just be named "TriForce"
// and print the TriForce symbol (one triangle over two other ones, can be found on internet) with "TRIFORCE"
// Don't forget to call the function !
- (void)printTriForce {
/*
although this doesn't follow the instructions,
verbose method names in ObjC are conventional.
*/
NSLog(@" /\\ ");
NSLog(@" /__\\ ");
NSLog(@" /\\ /\\ ");
NSLog(@"/__\\/__\\ ");
NSLog(@"TRIFORCE");
}
// FIXME: Functions - One parameter
// Create a function that takes a string as parameter and returns "Hello (value of string) !"
- (void)printNameWithName:(NSString *)name {
NSLog(@"Hello %@!", name);
}
// FIXME: Functions - Multiple parameters
// Create a function that takes two integers as parameters and returns the addition of these two.
// You can do the same with multiplication, subtraction and division.
- (int)addIntegersWithFirstInt:(int)firstNumber secondInt:(int)secondNumber {
return firstNumber + secondNumber;
}
- (int)multiplyIntegersWithFirstInt:(int)firstNumber secondInt:(int)secondNumber {
return firstNumber * secondNumber;
}
- (int)subtractIntegersWithFirstInt:(int)firstNumber secondInt:(int)secondNumber {
return firstNumber - secondNumber;
}
- (int)divideIntegersWithFirstInt:(int)firstNumber secondInt:(int)secondNumber {
return firstNumber / secondNumber;
}
// FIXME: Random generator
// Create a function that returns a random number
- (float)generateRandomNumber {
return arc4random();
}
// FIXME: Random generator with bounds
// Create another function that returns a random number between two bounds given as parameters.
- (float)generateRandomNumberWithLowerBound:(float)lowerBound upperBound:(float)upperBound {
return arc4random_uniform(upperBound) + lowerBound;
}
- (BOOL)andGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return firstBool && secondBool;
}
- (BOOL)orGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return firstBool || secondBool;
}
- (BOOL)noGateWithBool:(BOOL)onlyBool {
return !onlyBool;
}
- (BOOL)nandGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return !(firstBool && secondBool);
}
- (BOOL)norGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return !(firstBool || secondBool);
}
- (BOOL)xorGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return ((firstBool && secondBool) || (firstBool && secondBool));
}
- (BOOL)xnorGateWithFirstBool:(BOOL)firstBool secondBool:(BOOL)secondBool {
return ((firstBool || secondBool) && (firstBool || secondBool));
}
- (NSString *)reverseString:(NSString *)string {
int len = [string length];
NSMutableString *reverseString = [[NSMutableString alloc] initWithCapacity:len];
for(int i = len - 1; i >= 0; i--) {
[reverseString appendString:[NSString stringWithFormat:@"%c", [string characterAtIndex:i]]];
}
return reverseString;
}
int main (int argc, const char * argv[]) {
@autoreleasepool {
Correction *correction = [[Correction alloc] init];
// Part One:
// FIXME: Declare variables
// Declare two variables: an integer named "age", and a string named "name" with corresponding values (your name and age)
int age = 15;
NSString *name = @"Zane";
// FIXME: Print
// Print the following sentence in the console "You are NAME and you are AGE years old !". Don't forget to add a newline at the end
NSLog(@"You are %@ and you are %i years old!", name, age);
// FIXME: Concatenation
// Create a new string variable called "hello" which value is "Hello ". Add "name" at the end of "hello" (Concatenation) then print it
NSString *hello = @"Hello ";
hello = [hello stringByAppendingString:name];
NSLog(@"%@", hello);
// FIXME: Array
// create a new string array called "shoppingList", with three elements of your choice. Create an int variable containing the number of
// elements in "shoppingList" (using a function of the array/using the array)
NSArray *shoppingList = @[@"Eggs", @"Milk", @"Bread"];
__unused int shoppingListCount = [shoppingList count];
// FIXME: For-loop - Integer
// Create a simple for-loop for an integer "i" going from 1 to 10 that print the value of "i"
for (int i = 1; i <= 10; i++) {
NSLog(@"%i", i);
}
// FIXME: For-loop - shoppingList
// Create a for loop that iterate through "shoppingList" and prints each element.
for (int i = 0; i < shoppingList.count; i++) {
NSLog(@"%@", shoppingList[i]);
}
// FIXME: Foreach-loop
// Do the same with a foreach-loop.
for (NSString *item in shoppingList) {
NSLog(@"%@", item);
}
// FIXME: If-statement
// Modify the first for-loop (with i from 1 to 10) such that it prints "(value of i) is even" when "i" is divisible
// by 2 (You may want to learn more about "modulo" (%)). Else, print "(value of i) is odd".
for (int i = 1; i <= 10; i++) {
if (i % 2 == 0) {
NSLog(@"%i is even", i);
} else {
NSLog(@"%i is odd", i);
}
}
// FIXME: Sum Up
// Create a string variable called "element" with the value of your choice. Then create a for-loop that checks if "shoppingList" contains
// "element". If yes, print "You have to buy (value of element) !", and stop the loop (search how to stop a loop).
// If not, print "Nope, you don't need (value of "element")".
NSString *element = @"Bread";
for (int i = 0; i < shoppingList.count; i++) {
if ([element isEqualToString:shoppingList[i]]) {
NSLog(@"You have to buy %@!", shoppingList[i]);
break;
} else {
NSLog(@"Nope, you don't need %@", shoppingList[i]);
}
}
[correction printTriForce];
[correction printNameWithName:@"Zane"];
// FIXME: User entry
// Create a string variable that takes what the user enter in the console as value. Then print "You entered (value of string)"
char userInput[100];
NSLog(@"Input: ");
scanf("%s", userInput);
NSLog(@"You entered %s", userInput);
// FIXME: While loop
// Create a while loop that takes a number and divides it by 2 until it is less than 3
int number = 100;
while (number > 3) {
number /= 2;
}
// FIXME: do-While loop
// Do the same with a do-while loop
number = 100;
do {
number /= 2;
} while (number > 3);
// FIXME: Multidimensional array
// Create a two dimensional int array of 3 columns and 3 rows. Use 2 for-loops to add a random number
// between 1 and 9 in each of the 9 rooms.
// You may use one of the two previously created function.
// Then print them such that they appear like this (with [x1,x9] being the 9 random integers):
// {x1,x2,x3,}
// {x4,x5,x6,}
// {x7,x8,x9,}
int size = 3;
int multidimensionalArray[3][3] = {{0}};
for (int i = 0; i < size; i++){
for (int j = 0; j < size; j++){
multidimensionalArray[i][j] = [correction generateRandomNumberWithLowerBound:1 upperBound:10];
}
}
for (int i = 0; i < size; i++){
printf("{");
for (int j = 0; j < size; j++){
printf("%i,", multidimensionalArray[i][j]);
}
printf("}\n");
}
// FIXME: Switch
// Create a Switch that takes an integer "a" and return a sentence regarding the value of a
// (Create 3 statements for 3 specific values and a default one)
int a = 3;
switch (a) {
case 0:
NSLog(@"'a' is equal to 0");
break;
case 1:
NSLog(@"'a' is equal to 1.");
break;
case 2:
NSLog(@"'a' is equal to 2.");
break;
default:
NSLog(@"'a' is not equal to 0, 1, or 2.");
}
// FIXME: logic Gates
// Create 7 functions for each logic gates (And, Or, No, Nand, Nor, Xnor, Xor).
// Each function takes two booleans as parameters and returns the result of the logic gate.
// (or You can do it with a switch and only one function)
[correction andGateWithFirstBool:YES secondBool:YES];
[correction orGateWithFirstBool:YES secondBool:NO];
[correction noGateWithBool:NO];
[correction nandGateWithFirstBool:YES secondBool:NO];
[correction norGateWithFirstBool:YES secondBool:YES];
[correction xorGateWithFirstBool:NO secondBool:NO];
[correction xnorGateWithFirstBool:NO secondBool:YES];
// FIXME - Reverse
// Create a function that reverse a string
[correction reverseString:@"Zane Helton"];
}
return 0;
}
@end