以下程序的执行结果是 【15】 。
#include <iostream.h>
#include <fstream.h>
#include <stdlib.h>
int main()
fstream outfile, infile;
outfile.open("D:\\text.dat",ios::out);
if(!outfile)
cout<<"text.dat can’t open"<<end1;
abort();
outfile<<"1234567890"<<end1;
outfile<<"abcdefghij"<<end1;
outfile.close();
infile.open("D:\text.dat",ios::in);
if(!infile)
cout<<"text.dat can’t open"<<end1;
abort ( );
char textline[40];
int i=0;
while(!infile.eof())
i++;
infile.getline(textline,sizeof(textline));
cout<<i<<":"<<textline<<end1;
infile.close();
return 0;