Question

我在Objective-c项目中声明了自定义对象：

Student* student1 = [[Student alloc]init];
Student* student2 = [[Student alloc]init];
Student* student3 = [[Student alloc]init];
Student* student4 = [[Student alloc]init];
Student* student5 = [[Student alloc]init];
Student* student6 = [[Student alloc]init];

如何在周期中召唤他们

for (int i=1; i<=6; i++)
{
}   ?

Answer 1

你不能直接这样做。你可以使用一个数组（C风格或NSArray），然后迭代它（使用从零开始的索引或for-in循环）。

例如：

NSArray* students = @[ [[Student alloc] init],
                       [[Student alloc] init],
                       [[Student alloc] init],
                       [[Student alloc] init],
                       [[Student alloc] init],
                       [[Student alloc] init],
                     ];
for (int i = 0; i < students.count; i++)
{
    Student* student = students[i];
    // Do something with student
}
// Or:
for (Student* student in students)
{
    // Do something with student
}

在Objective-c中调用名称包含数字的自定义对象

1 个答案: