rw_struc.cpp

最新推荐文章于 2020-10-23 16:50:31 发布

原创最新推荐文章于 2020-10-23 16:50:31 发布 · 491 阅读

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#struct #ios #include #output #float

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name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <iostream.h>
#include <fstream.h>
#include <string.h>

struct status
{
   char name[80];
   float balance;
   unsigned long account_number;
};

void main(void)
{
struct status acc;

   strcpy(acc.name, "Lars Klander");
   acc.balance = 1234.56;
   acc.account_number = 98765432;
   ofstream outbal("balance.asc", ios::out | ios::binary);
   if(!outbal)
    {
      cout << "Cannot open output file." << endl;
      exit (1);
    }
   outbal.write((unsigned char *) &acc, sizeof(struct status));
   outbal.close();
   ifstream inbal("balance.asc", ios::in | ios::binary);
   if(!inbal)
    {
      cout << "Cannot open file." << endl;
      exit (1);
    }
   inbal.read((unsigned char*) &acc, sizeof(struct status));

   cout << acc.name << endl;
   cout << "Account number: " << acc.account_number << endl;
   cout.precision(2);
   cout.setf(ios::fixed);
   cout << "Balance: $" << acc.balance << endl;
   inbal.close();
}