二维数组的遍历
**可以先创建一个二维数组，利用两层循环控制输出
**
#include <stdio.h>
int main() {
char a = 0;
scanf("%c", &a);
char arr [3][3]={0};
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
arr[i][j]=a;
printf("%c",arr[i][j]);
}
printf("\n");
}
return 0;
}
![数组[]：](https://ucc.alicdn.com/pic/developer-ecology/c2czri64wvggm_4cebb70e75f344a29ae0b519da7736d9.png?x-oss-process=image/resize,h_160,m_lfit)
