//
// main.m
// oc基本语法
//
// Created by lanou on 16/7/9.
// Copyright © 2016年pingguo. All rights reserved.
//
#import
intmain(intargc,constchar* argv[]) {
@autoreleasepool{
// insert code here...
NSLog(@"Hello, World!");
// oc基本语法
//整型
NSIntegera =10;
NSLog(@"a=%ld",a);
CGFloatb =2.3;
NSLog(@"b=%.2f",b);
BOOLflag =YES;
NSString*str=@"abcde";
NSLog(@"str=%@",str);
NSLog(@"str的长度=%ld",str.length);
if([strisEqualToString:@"abcde"]) {
NSLog(@"是的");
}
if([strhasPrefix:@"a"]) {
NSLog(@"前缀等于a");}
if([strhasSuffix:@"e"]) {
NSLog(@"后缀等于e");
}
NSString*str1=[NSStringstringWithFormat:@"%@++++",@"im"];
NSLog(@"str1=%@",str1);
}
return0;
}
//
// main.m
// oc基础语法2
//
// Created by lanou on 16/7/9.
// Copyright © 2016年pingguo. All rights reserved.
//
#import
intmain(intargc,constchar* argv[]) {
@autoreleasepool{
// insert code here...
NSLog(@"Hello, World!");
NSArray*array1=@[@"a",@"b",@"c",@"d"];
NSLog(@"array1=%@",array1);
NSLog(@"count=%ld",array1.count);
NSString*str = array1[0];
NSLog(@"str=%@",str);
NSMutableArray*mutableArray =[NSMutableArrayarrayWithObjects:@"1",@"2",@"3",@"4",nil];
NSLog(@"mutable Array=%@",mutableArray);
[mutableArrayaddObject:@"5"];
NSLog(@"已添加----%@",mutableArray);
[mutableArrayremoveObject:@"3"];
NSLog(@"已移除----%@",mutableArray);
NSDictionary*dict =@{@"key1":@"value1",@"key2":@"value2",@"key3":@"value3"};
NSLog(@"dict=%@",dict);
NSString*string=[dictobjectForKey:@"key1"];
NSLog(@"string=%@",string);
NSLog(@"allkeys=%@,allvalues=%@",dict.allKeys,dict.allValues);
}
return0;
}
