Objective-c 建立類的使用

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以下是我寫的一個執行個體， 測試Objective-c是如何使用類的

TestClass.h 

////  TestClass.h//  TestClass////  Created by exchen on 6/15/15.//  Copyright (c) 2015 exchen. All rights reserved.//#import <Foundation/Foundation.h>@interface TestClass : NSObject{    //public成員變數    @public    int number1;    int number2;    NSString *Nstr;    char strArray[20];}//成員函式宣告-(void)print;-(void)calc;-(NSString*)strAppend:(NSString*) string1:(NSString*) string2;@end

TestClass.m

////  TestClass.m//  TestClass////  Created by exchen on 6/15/15.//  Copyright (c) 2015 exchen. All rights reserved.//#import "TestClass.h"#import <stdio.h>@implementation TestClass//成員函數實現-(void) print{    printf("%d\n",number1);    NSLog(Nstr);    printf("%s\n",strArray);}-(void) calc{    number1 += number2;    printf("%d\n",number1);}-(NSString*)strAppend:(NSString*) string1:(NSString*) string2{    NSString *strRet = [string1 stringByAppendingString:string2];    return strRet;}@end

main.m

////  main.m//  TestClass////  Created by exchen on 6/15/15.//  Copyright (c) 2015 exchen. All rights reserved.//#import <Foundation/Foundation.h>#import "TestClass.h"int main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        NSLog(@"Hello, World!");    }        TestClass *tc = [[TestClass alloc] init];  //分配記憶體        tc->number1 = 1;  //給類成員變數賦值    tc->number2 = 2;    [tc calc];       //調用類成員函數        strcpy(tc->strArray,"strArray");   //給類成員字串變數賦值        [tc print];  //調用類成員函數        NSString *strRet = [tc strAppend:@"string1" :@"string2"];  //調用帶參數的函數    NSLog(strRet); //列印傳回值    return 0;}

工程

Objective-c 建立類的使用