ios开发（十一）: command line program

https://developer.apple.com/legacy/library/documentation/Cocoa/Conceptual/CocoaFundamentals/Introduction/Introduction.html#//apple_ref/doc/uid/TP40002974-CH1-SW1

下面是一个从C++往objective c过渡的很好的main函数的例子。

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

NSArray *param = [[NSProcessInfo processInfo] arguments];

NSCountedSet *cset = [[NSCountedSet alloc] initWithArray:param];

NSArray *sorted_args = [[cset allObjects]

sortedArrayUsingSelector:@selector(compare:)];

NSEnumerator *enm = [sorted_args objectEnumerator];

id word;

while (word = [enm nextObject]) {

printf("%s\n", [word UTF8String]);

}

[cset release];

[pool release];

return 0;

}