一,二維數組的架構與邏輯
1.a[3][4] = {a[0], a[1], a[2]} ={{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}};
二維m×n --> m個一維數組 --> 每個一維數組包含n個元素
不廢話,直接看圖
2,確定的公式
a[0] = a[0]+0 = &a[0][0] = *(a+0)+0 = *a
a = &a[0] = &(&a[0][0]) = &(*a) a;
二, 二維數組中按層級解釋
1,二維數組中的一維數組
a[0] = a[0]+0 = &a[0][0] = *(a+0)+0 = *a
a[1] = a[1]+0 = &a[1][0] = *(a+1)+0 = *(a+1)
a[n] = a[n]+0 = &a[n][0] = *(a+n)+0 = *(a+n)
2,二維數組中一維數組的元素地址
a[0][2] --> a[0]+2 = &a[0][2] = *(a+0)+2 = *a+2
a[1][3] --> a[1]+3 = &a[1][3] = *(a+1)+3 = *(a+1)+3
a[i][j] --> a[i]+j = &a[i][j] = *(a+i)+j = *(a+i)+j
3,在指針數組和數組指針中更需小心
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