From 24d9cde4883202d4b7c5db7dad8981b4a4000125 Mon Sep 17 00:00:00 2001 From: Yannick Loriot Date: Tue, 13 Aug 2013 16:22:40 +0200 Subject: [PATCH] [NEW] Statements --- objective-c.html.markdown | 72 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/objective-c.html.markdown b/objective-c.html.markdown index 7f87da6f..ebae2fc7 100644 --- a/objective-c.html.markdown +++ b/objective-c.html.markdown @@ -99,6 +99,78 @@ int main (int argc, const char * argv[]) /////////////////////////////////////// // Operators /////////////////////////////////////// + + // The operators works like in the C language + // For example: + 3 == 2; // => 0 (NO) + 3 != 2; // => 1 (YES) + 1 && 1; // => 1 (Logical and) + 0 || 1; // => 1 (Logical or) + ~0x0F; // => 0xF0 (bitwise negation) + 0x0F & 0xF0; // => 0x00 (bitwise AND) + 0x01 << 1; // => 0x02 (bitwise left shift (by 1)) + + /////////////////////////////////////// + // Control Structures + /////////////////////////////////////// + + // If-Else statement + if (NO) + { + NSLog(@"I am never run"); + } else if (0) + { + NSLog(@"I am also never run"); + } else + { + NSLog(@"I print"); + } + + // Switch statement + switch (2) { + case 0: + { + NSLog(@"I am never run"); + } break; + case 1: + { + NSLog(@"I am also never run"); + } break; + default: + { + NSLog(@"I print"); + } break; + } + + // While loops exist + int ii = 0; + while (ii < 4) + { + NSLog(@"%d,", ii++); // ii++ increments ii in-place, after using its value. + } // => prints "0, + 1, + 2, + 3," + + // For loops too + int jj; + for (jj=0; jj < 4; jj++) + { + NSLog(@"%d,", ii++); + } // => prints "0, + 1, + 2, + 3," + + // Foreach + NSArray *values = @[@0, @1, @2, @3]; + for (NSNumber *value in values) + { + NSLog(@"%@,", value); + } // => prints "0, + 1, + 2, + 3," // Clean up the memory you used into your program [pool drain];