如何在目标C中使用输入和打印？

Question

在我的第一个目标C项目中，我正在处理一个游戏大师一般形式的代码。我目前有一个程序，允许计算机生成六种随机“颜色”中的四种，我想知道是否有人能告诉我如何修改它，这样一个人就可以键入它的四种颜色来猜测计算机选择的颜色，然后打印一个序列(一种)。对于每一个正确的猜测，每个错误的猜测都有一个"o“)。

#import "Gameplay.h"
int main(int argc, const char * argv[])
{

@autoreleasepool {
    Gameplay * gp = [[Gameplay alloc] init];

}
return 0;
}


 #import <Foundation/Foundation.h>

 @interface Gameplay : NSObject
 -(NSMutableArray *) board;

 @end


@implementation Gameplay
- (id)init {
self = [super init];
if (self)
{
    [self board];
}
return self;
}
-(NSMutableArray *) board{
NSMutableArray *colors = [NSMutableArray arrayWithObjects:@"r",@"b",@"y",@"g",@"o",@"p", nil];

NSMutableArray *choose = [[NSMutableArray alloc] initWithCapacity:4];

for (int i = 0; i < 4; i++) {
    int randomize = arc4random()%[colors count];
    NSString *turn = [[NSString alloc] initWithString:[colors objectAtIndex: randomize]];
    [choose addObject: turn];
    [colors removeObjectAtIndex: randomize];
}
NSFileHandle(

for(int i = 0;i < 4;i++){
    NSLog(@"%@",[choose objectAtIndex:i]);
}
return choose;
}
@end



#import "Gameplay.h"
int main(int argc,
@autoreleasepool {
    Gameplay * gp = [[Gameplay alloc] init];

}
return 0;
}


#import <Foundation/Foundation.h>

@interface Gameplay : NSObject
-(NSMutableArray *) board;

@end


 @implementation Gameplay
 - (id)init {
self = [super init];
if (self)
{
    [self board];
}
return self;
}
-(NSMutableArray *) board{
NSMutableArray *colors = [NSMutableArray arrayWithObjects:@"r",@"b",@"y",@"g",@"o",@"p", nil];

NSMutableArray *choose = [[NSMutableArray alloc] initWithCapacity:4];

for (int i = 0; i < 4; i++) {
    int randomize = arc4random()%[colors count];
    NSString *turn = [[NSString alloc] initWithString:[colors objectAtIndex: randomize]];
    [choose addObject: turn];
    [colors removeObjectAtIndex: randomize];
}
NSFileHandle(

for(int i = 0;i < 4;i++){
    NSLog(@"%@",[choose objectAtIndex:i]);
}
return choose;
}
@end

Answer 1

我没有完全明白你想要达到什么目的。但是我想你建议，为了随机排列你的可变数组，在下面这样做，每当你执行代码时，你的可变数组的顺序会被随机改变，因此你可以在此基础上根据用户的输入获取值并相应地写检查器：--

NSMutableArray *mutArr=[NSMutableArray arrayWithObjects:@"red",@"green",@"blue",@"white",nil];
int i=0;
for (i=0; i<[mutArr count]; i++)
{
NSUInteger rand= (arc4random() %[mutArr count]);
    [mutArr exchangeObjectAtIndex:i withObjectAtIndex:rand];
    NSLog(@"%@",mutArr);
}