【C语言】二维数组

int arr[3][4];
char arr[3][5];
double arr[2][4];

int arr1[3][4] = {1,2,3,4,2,3,4,5,3,4,5,6};
//1 2 3 4
//2 3 4 5
//3 4 5 6

int arr1[3][4] = { {1,2}, {3, 4}, {5, 6}};
//1 2 0 0
//3 4 0 0
//5 6 0 0

int arr2[][2] = {1,2,3,4};//二维数组如果有初始化，行可以省略，列不能省略
//1 2
//3 4

#include 

int main()
{
	int arr[3][4] = { 1,2,3,4,2,3,4,5,3,4,5,6 };
	int i = 0;
	for (i = 0; i < 3; i++)
	{
		int j = 0;
		for (j = 0;j < 4; j++)
		{
			printf("%d ", arr[i][j]);//打印一行
		}
		printf("n");//打印一行后换行
	}
	return 0;
}
//1 2 3 4
//2 3 4 5
//3 4 5 6

二维数组在内存中也是连续存储的。