Swap two values · 交换两个值
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English
Swap two values
swap receives pointers to two integers and must exchange their values. Through a pointer, *a reads — or writes — the value it points at. Use a temporary variable so you don't lose one value while copying the other.
中文
交换两个值
swap 接收指向两个整数的指针,必须交换它们的值。通过指针,*a 可以读取或写入它所指向的值。用一个临时变量,免得在复制一个值时丢失另一个。
Complete void swap(int *a, int *b) to exchange the two integers that a and b point to. Use the pointers — *a is the value at a. · 完成 void swap(int *a, int *b),交换 a 和 b 指向的两个整数。使用指针 —— *a 是 a 处的值。
Click Run to see the output here. · 点击“运行”查看此处输出。