多维矩阵转换为一维矩阵

[c]代码库

#include <stdio.h>
#include <stdlib.h>

int main ( void )
{
	int arr1[3][4] = {{1, 2, 3, 4},
		{5, 6, 7, 8},
		{9, 10, 11, 12}
	};
	int arr2[12] = {0};
	int row, column, i;

	printf ( "原二维资料：\n" );
	for ( row = 0; row < 3; row++ )
	{
		for ( column = 0; column < 4; column++ )
		{
			printf ( "%4d", arr1[row][column] );
		}
		printf ( "\n" );
	}

	printf ( "\n以列为主：" );
	for ( row = 0; row < 3; row++ )
	{
		for ( column = 0; column < 4; column++ )
		{
			i = column + row * 4;
			arr2[i] = arr1[row][column];
		}
	}
	for ( i = 0; i < 12; i++ )
		printf ( "%d ", arr2[i] );

	printf ( "\n以行为主：" );
	for ( row = 0; row < 3; row++ )
	{
		for ( column = 0; column < 4; column++ )
		{
			i = row + column * 3;
			arr2[i] = arr1[row][column];
		}
	}
	for ( i = 0; i < 12; i++ )
		printf ( "%d ", arr2[i] );

	printf ( "\n" );

	return 0;
}