Windows下Objective-C环境搭建教程
Windows下Objective-C环境搭建教程是本文要介绍的内容,主要是在windows平台下搭建Objective-C开发环境,具体内容来看本文详解。
1.安装4个文件,直接找我要吧
2、测试:
安装完成后,进入"开始-程序-GNUstep-Shell",出现的窗口就是shell 窗口,就可以进行编辑(vi/vim)和编译(gcc) object-C代码了。
这个shell的默认路径是 \home\<username>,例如,我的是 /home/samsung/。
另外,我直接用devc++,UE等编辑软件编辑程序,放在/home/samsung/下,进行编译和运行。
下面是我的代码和运行结果:
hello.m的源码:
#import <stdio.h>
int main(int argc,const char *argv[]){
printf("hello world\n");
return 0;
} 编译运行:
samsung@coco ~ $ gcc hello.m samsung@coco ~ $ ls a.exe hello.m samsung@coco ~ $ ./a.exe hello world samsung@coco ~
3、一个更复杂的例子:
代码:包含3个文件。
(1) Fraction.h:
#import <Foundation/NSObject.h>
@interface Fraction: NSObject {
int numerator;
int denominator;
}
-(void) print;
-(void) setNumerator: (int) d;
-(void) setDenominator: (int) d;
-(int) numerator;
-(int) denominator;
-(void) setNumerator: (int) n ddd: (int)d;
-(void) setNumerator: (int)n : (int)d :(int) a;
// 这里,有3个setNumerator函数, 是重载。
@end (2)Fraction.m
#import "Fraction.h"
#import <stdio.h>
@implementation Fraction
-(void) print {
printf( "%i/%i", numerator, denominator );
}
-(void) setNumerator: (int) n {
nnumerator = n;
}
-(void) setDenominator: (int) d {
ddenominator = d;
}
-(int) denominator {
return denominator;
}
-(int) numerator {
return numerator;
}
-(void) setNumerator: (int) n ddd: (int)d {
nnumerator = n;
ddenominator = d;
}
-(void) setNumerator: (int)n : (int)d :(int) a {
nnumerator = n;
ddenominator = d;
printf("+++++a = %d +++ \n", a);
}
@end (3) main.m
#import <stdio.h>
#import <Foundation/Foundation.h>
#import "Fraction.h"
int main( int argc, const char *argv[] ) {
// create a new instance
Fraction *frac = [[Fraction alloc] init];
int x;
int y;
// set the values
[frac setNumerator: 1];
[frac setDenominator: 3];
// print it
printf( "The fraction is: " );
[frac print];
printf( "\n\n" );
NSLog(@"hello world!!!\n"); // ok
[frac setNumerator:34 ddd: 98];
[frac print];
printf( "\n\n" );
NSLog(@"hello world world!!!\n"); // ok
[frac setNumerator:44 : 55 :66]; // ok
[frac print];
printf( "\n\n" );
scanf("%d %d", &x,&y); //scanf 函数的测试,ok
[frac setNumerator: x ddd: y]; //ok
[frac print];
// free memory
[frac release];
// [frac release]; //前面已经release了,所以这里发生异常:程序崩溃。
//即对空指针进行release,当然不允许了。
return 0;
} 编译方法:
(1)将main.m编译成main.o :
gcc -fconstant-string-class=NSConstantString -c main.m -I /GNUstep/System/Library/Headers
(2) 将Fraction.m编译成Fraction.o :
gcc -c Fraction.m -I /GNUstep/System/Library/Headers
(3) 将.o编译成可执行程序,名为main(最后生成的是main.exe)
gcc -o main main.o Fraction.o -L /GNUstep/System/Library/Libraries/ -lobjc -lgnustep-base
注意:这时会有warning出现,但可以不用管它,毕竟,我们的可执行程序已经编译出来了.
运行结果:
samsung@coco ~/objc/fraction $ ./main.exe The fraction is: 1/3 2010-08-13 16:29:01.515 main[1212] hello world!!! 34/98 2010-08-13 16:29:01.515 main[1212] hello world world!!! +++++a = 66 +++ 44/55 22 33 22/33 samsung@coco ~/objc/fraction
4、总结:
1、用户也可以使用cygwin+ GNUstep来进行开发;
2、Objective-C是以m为后缀的,用GNU GCC来编译;
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