可以看看哪里有错误吗

#include
#include
#include
#include
using namespace std;
int main(int argc, void* argv[])
{
//数据写入文件中
ofstream infile("a.txt",ios::out);
if (!infile){
cout << "打开文件失败。";
exit(1);
}
infile << "Hello world." << endl;
//读取文件
infile.close();
ifstream infile2("a.txt");
string line;
getline(infile2, line);
cout << line << endl;

//将数据转换为ASCII后以字节存入数组，并计算字节数
 int len = line.length();
 int byte[24];
 for (int i = 0; i < len; i++){
      char ch = line[i];
      int asc = ch;
      byte[i] = asc;
      cout << ch << " 的ASCII码为" << asc << endl;
 }
 infile2.close();
 if (len % 2 != 0) //处理数据的字节数为单数的情况
 {
      byte[len] = 0;
      len += 1;
 }
 
int high = 0, low = 0;
 int h_carry = 0, l_carry = 0;
 //把ASCII值转换为十六进制
 cout << "十六进制：" << "0x";
 for (int i = 0; i < len; i++){
  stringstream ss;
  ss << hex << byte[i];
 cout <<ss.str();
  if (i % 2 != 0)
   cout << " ";
//高八位加高八位
  if (i % 2 == 0){
       high += byte[i];
   if (high > 255){
        h_carry += (high / 256);
        high %= 256;
       }
  }
//低八位加低八位
  else
  {
      low += byte[i];
       if (low > 255){
        l_carry += (low / 256);
        low %= 256;
       }
  }

}
cout << endl;
//处理进位
high += l_carry;
low += h_carry;

stringstream ss;
 ss << hex << high;
 ss << hex << low;
 cout << "校验和：" << ss.str() << endl;
 return 0;

}