【C语言】杨氏矩阵

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#include <stdio.h>
int findnum(int* (*arr)[4], int r, int c, int k)
{
	// 先找出右上角的值
	int i = 0;
	int j = c - 1;
	while (i <= r && j >= 0)
	{
		if (k > arr[i][j])
		{
			i++;
		}
		else if (k < arr[i][j])
		{
			j--;
		}
		else
		{
			return 1;
		}
	}
	return 0;
}
int main()
{
	int arr[4][4] = { 1,2,3,4,2,3,4,5,3,4,5,6,4,5,6,7 };
	int k = 6;
	int ret = findnum(arr, 4, 4, k);
	if (ret == 1)
	{
		printf("存在!");
	}
	else
	{
		printf("不存在!");
	}
	return 0;
}