27 lines
720 B
C
27 lines
720 B
C
#include <stdio.h>
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int main()
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{
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int *arr[10]; // arr 数组用来存储地址，每个元素都是 int *
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int a = 1, b = 2;
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arr[0] = &a; // 将 a 的地址存放在 arr 数组的第一个元素中
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arr[1] = &b;
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a = a + b;
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printf("arr[0] = %d\n", *arr[0]); // *arr[0] = 3
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int arr2[3] = {10, 20, 30};
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// 将 arr2 数组的第二个元素的地址存放在 arr 数组的第三个元素中
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arr[2] = &arr2[1];
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printf("arr[2] = %d\n", *arr[2]); // *arr[2] = 20
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int *p = arr[2]; // arr[2] => int * => &arr2[1]
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*p = 100;
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for (int i = 0; i < 3; i++)
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{
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printf("%d ", arr2[i]); // 10 100 30
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// printf("%d ", *(arr2 + i)); // 10 100 30
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}
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return 0;
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} |