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You need to read the entire contents of a file named Message.txt into a single string variable.Which code segment should you use?()
A.
B.
C.
D.
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更多 “ You need to read the entire contents of a file named Message.txt into a single string variable.Which code segment should you use?() A.B.C.D. ” 相关考题
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使用VC6打开考生文件夹下的工程test14_3,此工程包含一个test14_3.cpp,其中定义了类File,但类的定义并不完整。请按要求完成下列操作,将程序补充完整。(1)完成构造函数的定义,使数据成员filename,content指向为空。请在注释“//**1**”之后添加适当的语句;(2)完成函数set_contents的定义,该函数为content申请新的空间来存储new_content的内容,成功返回true,失败返回false。请在注释“//**2**”之后添加适当的语句;(3)完成成员函数copy(File source,File target)的定义,该函数实现将source的内容拷贝至target的功能,注意必须使用已经定义的成员函数来实现。请在注释“//**3**”之后添加适当的语句:(4)完成析构函数的定义,要求释放content指向的空间。请在注释“//**4**”之后添加适当的语句。输出结果如下:file2:file1 contentsfile2:file2 contents注意:除在指定的位置添加语句外,请不要改动程序中的其他语句。源程序文件testl4—3.cpp清单如下:include<iostream.h>include<string.h>class File{private:char file_name[64];char*contents;public:File(char*filename){// ** 1 **};File::~File(){// ** 4 **}void printfile(){cout<<file_name<<":"<<contents<<endl;)friend bool copy(File source,File target);bool set_contents(char * new_contents);};bool File::set_contents(char*new_contents){// ** 2 **if(contents==NULL)return false;strcpy(contents,new_contents);return true;}bool copy(File source,File target){// ** 3 **}void main{){File f1("filel"),f2("file2");f1.set_contents("filel contents");copy(f1,f2);f2.printfile();f2.set_contents("file2 contents,);f2.printfile();}
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--Remember the first time we met, John?
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A.were reading
B.had read
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D.read
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