为什么当数据应该为3时，我的数组中的对象数返回0？

Question

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

    NSMutableArray *myMute;
    NSString *stringOne = @"This is string 1";
    NSString *stringTwo = @"This is string 2";
    NSString *stringThree = @"This is string 3";

    [myMute addObject: stringOne];
    [myMute addObject: stringTwo];
    [myMute addObject: stringThree];

    NSLog(@"There are %li objects in the myMute array", [myMute count]);


    return 0;
}

}

Answer 1

只需分配你创建nil数组的数组，你必须用new或alloc

分配内存

NSMutableArray *myMute = [NSMutableArray new];

    NSString *stringOne = @"This is string 1";
    NSString *stringTwo = @"This is string 2";
    NSString *stringThree = @"This is string 3";

    [myMute addObject: stringOne];
    [myMute addObject: stringTwo];
    [myMute addObject: stringThree];

    NSLog(@"There are %li objects in the myMute array", [myMute count]);


    return 0;