23 lines
586 B
C
23 lines
586 B
C
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#include <stdio.h>
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#include <string.h>
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struct POS
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{
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int x;
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int y;
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};
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int main()
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{
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struct POS p1 = {0, 0};
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struct POS *p2 = &p1; // 结构体指针指向结构体变量
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// p2.x = 2; // 错误，结构体指针不能直接访问结构体变量的成员，需要使用 -> 运算符
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p2->x = 2;
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p2->y = 2;
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printf("point1 x=%d, y=%d\n", p1.x, p1.y);
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printf("point2 x=%d, y=%d\n", p2->x, p2->y);
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// printf("point2 x=%d, y=%d\n", (*p2).x, (*p2).y); // *p2 也是一个结构体变量，可以使用 . 运算符访问成员
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return 0;
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}
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