void Merge() 
{ 
  char name[20]; 
  string str1 = "F:/數(shù)據(jù)/1.jpg"; 
  string str2 = "F:/數(shù)據(jù)/2.jpg"; 
  string strBlock = "F:/數(shù)據(jù)/BLOCK.dat"; 
 
  FILE* f1 = fopen(str1.c_str(),"rb+"); 
  FILE* f2 = fopen(str2.c_str(),"rb+"); 
  FILE* f3 = fopen(strBlock.c_str(),"rb+"); 
 
  // 獲取文件的長度 
  int iLen1 =filelength(fileno(f1)); 
  int iLen2 = filelength(fileno(f2)); 
 
  char *buf1 = new char[iLen1];  
  memset(buf1,0x0,iLen1);  
  char *buf2 = new char[iLen2];  
  memset(buf2,0x0,iLen2);  
 
  // 獲取文件內(nèi)容 
  fread(buf1,iLen1,1,f1);  
  fread(buf2,iLen2,1,f2);   
  fclose(f1);  
  fclose(f2);  
 
   
  // 在文件頭記錄合并文件的個數(shù) 
  int iCount = 2; 
  fseek(f3,0,SEEK_SET); 
  fwrite(&iCount,sizeof(int),1,f3); 
 
  // 寫入第一個文件 
  memset(name,0x0,20);  
  strcpy(name,str1.c_str()); 
  fwrite(name,20,1,f3);  
  fwrite(&iLen1,sizeof(int),1,f3);  
  fwrite(buf1,iLen1,1,f3);  
 
  // 寫入第二個文件 
  memset(name,0x0,20);  
  strcpy(name,str2.c_str()); 
  fwrite(name,20,1,f3);  
  fwrite(&iLen2,sizeof(int),1,f3);  
  fwrite(buf2,iLen2,1,f3);   
 
  fclose(f3);  
    
   
    
  //刪除申請的內(nèi)存    
  delete[] buf1;   
  delete[] buf2;  
} 

void Split() 
{ 
  char name[20]; 
  string strBlock = "F:/數(shù)據(jù)/BLOCK.dat"; 
  FILE* f3 = fopen(strBlock.c_str(),"rb+"); 
 
  // 獲取文件數(shù)量 
  int iCount = 0; 
  fseek(f3,0,SEEK_SET); 
  fread(&iCount,sizeof(int),1,f3); 
 
  for(int i=0;i<iCount;i++) 
  { 
    memset(name,0x0,20); 
    fread(&name,20,1,f3); 
    // 輸出名稱 
    cout<<name<<endl; 
    int iLen = 0; 
    // 讀取文件長度 
    fread(&iLen,sizeof(int),1,f3); 
    char *buff = new char[iLen]; 
    // 讀取文件內(nèi)容 
    fread(buff,iLen,1,f3); 
    char fileLen[10]; 
    sprintf(fileLen, "%d", iLen); 
 
    // 以文件長度做名稱 
    string s = fileLen; 
    string strName = "F:/數(shù)據(jù)/"; 
    strName += s; 
    strName += string(".jpg") ; 
 
    // 新建一個文件 
    FILE* file= fopen(strName.c_str(),"wb+"); 
    fwrite(buff,iLen,1,file); 
    fclose(file); 
  } 
 
  fclose(f3); 
}