系统调用拷贝函数.cpp

系统调用拷贝函数 本程序通过Linux的系统调用进行文件拷贝

#include<unistd.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<stdio.h>
#include<string>
using std::string;

char source[100],des[100];
int intSou,intDes;

int OpenorNot()
{
  printf("enter source :");
  gets(source);
  intSou=open(source,O_APPEND);
  return intSou;
}

int CreatorNot()
{
  printf("enter des :");
  gets(des);
  intDes=creat(des,00600);creat(des,00600);
  return intDes;
}

int main()
{
  char buffer[1024];
  int intOpen=1,intCreat=1,size;
   while(intOpen==1)
    {
      intOpen=OpenorNot()+2;
        if(intOpen==1)
           printf("File open error!!\n");
     }
  
    while(intCreat==1)
     {
     intCreat=CreatorNot()+2;
        if(intCreat==1)
            printf("Destination doesn't exist!!\n");
     }
   
   while(1)
   {
  size=read(intSou,buffer,sizeof(buffer));
  if(size==0)break;
  write(intDes,buffer,size);
   }

   close(intSou);
    close(intDes);
  return 0;
}