//数组的初始化方法
# include<stdio.h>
# include<stdlib.h>
int main()
{
int a[3][4];
int num = 0;
//方法一:
/*
for (int i = 0; i < 3 * 4; i++)
{
a[i / 4][i % 4] = num;
num++;
}
*/
//方法二:
/*
printf("start...
");
for (int *p = &a[0][0]; p < &a[0][0] + 12; p++)//原理是数组在内存中是线性排列的
{
*p = num;//指针的线性方式初始化数组
num++;
}
*/
//方法三:
/*
int a[3][4] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
*/
//方法四:
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 4; j++)
{
a[i][j] = num;
num++;
}
}
//打印
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 4; j++)
{
printf("%4d", a[i][j]);
}
printf("
");
}
getchar();
}