文件分割工具

#include
#include
#include
#include
using namespace std;
int main()
{
	string path;
	cout<<"请输入要分隔的文件路径：";
	cin>>path;
	string block;
	cout<<"请输入每块的文件大小(1G/1M/1K/1B)：";
	cin>>block;
	const int block_size=33554432;
	unsigned __int64 size;
	int ubound=block.size()-1;
	sscanf(block.substr(0,ubound).c_str(),"%I64d",&size);
	switch(block[ubound])
	{
	case 'G':
		{
			size <<=30;
			break;
		}
	case 'M':
		{
			size <<=20;
			break;
		}
	case 'K':
		{
			size <<=10;
			break;
		}
	default:
		{
			break;
		}
	}
	ifstream in(path.c_str(),ios::binary);
	if(!in)
	{
		cout<<"打开文件失败，请重新运行！"<0;i++,count++)
	{
		itoa(i,buf,10);
		string fullname=path+".part"+buf;
		cout<<"正在生成"<0)
		{
			if(current_size>=block_size)
			{
				in.read(buf,block_size);
			}
			else
			{
				in.read(buf,current_size);
			}
			if(in.gcount()==0)
			{
				i=-1;
				break;
			}
			current_size -=in.gcount();
			sum +=in.gcount();
			fout.write(buf,in.gcount());
		}
		fout.close();
	}
	out<<"echo 本批处理文件共分成 "<=1000000000)
	{
		out<=1000000)
	{
		out<=1000)
	{
		out<