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strassen in c language.

#include<stdio.h>
#define N 8
void input(int n,int p[N][N])
{
 int i,j;
 for(i=0;i<n;i++)
 {
  printf("please input the %d line:\n",i+1);
  for(j=0;j<n;j++)
  {
  scanf("%d",&p[i][j]);
 }
}
 }
void output(int n,int p[N][N])
{
 int i,j;
 for(i=0;i<n;i++)
 {
 printf("\n");
 for(j=0;j<n;j++)
 {
  printf("%d",p[i][j]);
 }
}
 }
void MATRIX_ADD(int n,int X[][N],int Y[][N],int Z[][N])
{
 int i,j;
 for(i=0;i<n;i++)
 for(j=0;j<n;j++)
 Z[i][j]=X[i][j]+Y[i][j];
}
void MATRIX_SUB(int n,int X[][N],int Y[][N],int Z[][N])
{
 int i,j;
 for(i=0;i<n;i++)
 for(j=0;j<n;j++)
 Z[i][j]=X[i][j]-Y[i][j];
}
void MATRIX_MULTIPLY(int A[][N],int B[][N],int C[][N])
{
 int i,j,t;
 for(i=0;i<2;i++)
 for(j=0;j<2;j++)
 {
  C[i][j]=0;
  for(t=0;t<2;t++)
  C[i][j]=C[i][j]+A[i][t]*B[t][j];
 }
}
void STRASSEN(int n,int A[][N],int B[][N],int C[][N])
{
 int i,j;
 int A11[N][N],A12[N][N],A21[N][N],A22[N][N];
 int B11[N][N],B12[N][N],B21[N][N],B22[N][N];
 int C11[N][N],C12[N][N],C21[N][N],C22[N][N];
 int M1[N][N],M2[N][N],M3[N][N],M4[N][N],M5[N][N],M6[N][N],M7[N][N];
 int AA[N][N],BB[N][N],MM1[N][N],MM2[N][N];
 if(n==2)
 MATRIX_MULTIPLY(A,B,C);
 else
 {
  for(i=0;i<n/2;i++)
  for(j=0;j<n/2;j++)
  {
   A11[i][j]=A[i][j];
   A12[i][j]=A[i][j+n/2];
   A21[i][j]=A[i+n/2][j];
   A22[i][j]=A[i+n/2][j+n/2];
   B11[i][j]=B[i][j];
   B12[i][j]=B[i][j+n/2];
   B21[i][j]=B[i+n/2][j];
   B22[i][j]=B[i+n/2][j+n/2];
  }
  MATRIX_SUB(n/2,B12,B22,BB);
  STRASSEN(n/2,A11,BB,M1);
  MATRIX_ADD(n/2,A11,A12,AA);
  STRASSEN(n/2,AA,B22,M2);
  MATRIX_ADD(n/2,A21,A22,


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JSTL ʹÓà c:forEach

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 # cat /proc/bus/input/devices
cat /proc/bus/input/devices
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="qwerty ......

Ubuntu linuxϵͳϰ²×°C kermit´®¿Ú¹¤¾ß

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gylu@dell-desktop:~$ sudo apt-get install ckermit
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gylu@dell-desktop:~$gedit ~/.kermrc
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   set line            /dev/ttyS0
    set speed    & ......

C/C++º¯Êý²ÎÊý,´«ÖµÓò´«Ö·µÄÇø±ð!!!

/*
* File: main.cpp
* Author: Vicky
*
* Created on 2010Äê5ÔÂ8ÈÕ, ÏÂÎç2:47
*/
#include <iostream>
using namespace std;
class A{
public:
A(){
cout << "Ö´Ðй¹Ô캯Êý´´½¨Ò»¸ö¶ÔÏó" << endl;
}
A(A&){
cout << "Ö´Ðп½±´º¯Êý¿½±´Ò»¸ö¶ ......

C preprocessor

http://en.wikipedia.org/wiki/C_preprocessor
C preprocessor
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The C preprocessor (cpp) is the preprocessor for the C programming language. In many C implementations, it is a separate program invoked by the compiler as the first part ......
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