有如下的程序:
include <iostream>
include <fstream>
using namespace std;
int main()
{
ofstream outf("D:\\temp.txt",ios_base::trunc) ;
outf<<"World Wide Web";
outf.close();
ifstream inf("D:\\temp.txt");
char s[20];
inf>>s;
inf.close();
cout<<s;
return 0;
}
执行后的输出结果是【 】。
第1题:
有如下程序: #include <iostream> void fun(int& x, int y){int t=x;x=y;y=t;} int main () { int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; } 执行后的输出结果是
A.42,42
B.23,23
C.23,42
D.42,23
第2题:
以下程序的执行结果是【 】。
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
第3题:
有以下程序: #include <iostream> #include <fstream> using namespace std; int main ( ) { ofstream ofile; char ch; ofile.open ("abc.txt"); cin>>ch; while (ch!='#' ) { cin>>ch; ofile.put(ch);
A.程序编译时出错
B.abc#
C.abc
D.#
第4题:
如下程序的输出结果是 #include<iostream> void fun(int & X,inty){intt=x;x=y;y=t;} int main( ){ int a[2]={23,42}; fun(a[1],a[0]); std::cout<<a[0]<<","<<a[1]<<std::endl; return 0; }
A.42,42
B.23,23
C.23,42
D.42,23
第5题:
以下程序的执行结果是_______。
include<iostream.h>
include<fstream.h>
include<stdlib.h>
void main()
{
char ch:
fstream file:
file.open("abc.dat",ios::out1ios::inlios::binary);
if(! file)
{
cout<<“abc.dat文件不能打开”<<endl:
abort