我试图在
objective-c中编写我的第一个类,我想在类的方法中传递NSString对象作为参数,但是我得到一个错误,说“不能使用对象作为方法的参数”.所以我的问题是如何将字符串作为参数传递给方法？这是我的代码我试图开始工作：
#import <Foundation/Foundation.h>
@interface Car
{
NSString *color;
NSString *make;
int year;
}
- (void) print;
- (void) setColor: (NSString) c;
- (void) setMake: (NSString) m;
- (void) setYear: (int) y;
@end
@implementation Car
- (void) print
{
NSLog(@"The $d Ford %@ is $@.",year,make,color);
}
- (void) setColor: (NSString) c
{
color=c;
}
- (void) setMake: (NSString) m
{
make=m;
}
- (void) setYear: (int) y
{
year=y;
}
@end
int main (int argc,const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
Car *car= [Car new];
[car setColor:@"blue"];
[car setMake:@"Bronco"];
[car setYear:1992]
[car print];
[car release];
[pool drain];
return 0;
}
