每日一练：OC中的数据格式（指针和数据）--时间

#import <Foundation/Foundation.h>

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

    @autoreleasepool {

        // insert code here...

        NSDate *now = [NSDate date];

        //时间指针格式

        NSLog(@"The time for now is :%p. \n", now);

        //时间数据格式

        NSLog(@"The time for now is %@", now);

        NSLog(@"Hello, World!");

    }

    return 0;

}

Result：

2018-03-10 14:00:41.983487+0800 TOCNSDatea[36735:12810491] The time for now is :0x10041aaf0.

2018-03-10 14:00:41.983788+0800 TOCNSDatea[36735:12810491] The time for now is Sat Mar 10 14:00:41 2018

2018-03-10 14:00:41.983821+0800 TOCNSDatea[36735:12810491] Hello, World!

Program ended with exit code: 0