c ++ begginer程序帮助 [英] c++ begginer program help
问题描述
我对c ++编程很陌生，我需要一些帮助
我的大学分配：
写一个程序读取输入c ++文件并删除评论。
评论可以是oneline（//）和块评论（/ ** /。
的名称是从命令行读取的文件。使用函数和全局
变量如果需要的话。
这里是我的代码。提前致谢
#include< fstream>
#include< stdlib.h>
#include< iostream.h>
#include< stdio.h>
ifstream fp ;
ofstream fpp;
void remove（int kraj，char * line）{//删除''//''并保存到文件
int i;
for（i = 0; i< = kraj; i ++）{
fpp<< line;
}
}
void proceed（int kkraj，char * line，int lenght）{
int i;
for（i = kkraj; i< = lenght; i ++）{
fpp<< line;
}
}
void main（）{
int i，k，k2，k3;
char filename [12];
char * line;
cout<<"文件的名称是什么" ;;
cin>> filename;
fp.open（filename，ios :: in）; //文件来源阅读
if（！fp）{
cout<<" \ n error opening\\\
" ;;
退出（0）;
}
fpp.open（" no commentary"，ios：ut）; //文件保存非评论
程序
if（！fpp）{
cout<< 打开文件时出错。\ n;
}
while（line = fgets（fp））{
for（i = 0; i< strlen（line）; i ++）{
if（（line [i] ==''/''）&&（line [i + 1] =='' /''））{
k = i-1;
删除（k，行）;
}
if（（line [i] ==''/''）&&（！begin）&&（line [i + 1] ==''*''））{
k2 = i-1;
删除（k2，line）;
begin = 1;
}
if（（line [i] ==''*''）&&（begin）&&（line [i + 1] ==''/' '））{
k3 = i-1;
begin = 0;
继续（k3，line，strlen（line））;
}
}
fp.close（）;
fpp.close（）;
返回;
}
}
I am quite new to c++ programming and I would need some help with
my college assigment:
write a program which reads input c++ file and removes commentary. The
commentary can be oneline(//) and block commentary(/**/. The name of
the file is read from the command line. use functions and global
variables if neccesary.
here is my code. Thanks in advance
#include <fstream>
#include <stdlib.h>
#include <iostream.h>
#include <stdio.h>
ifstream fp;
ofstream fpp;
void remove (int kraj, char *line){ //removes ''//'' and saves to file
int i;
for (i = 0; i <= kraj; i++) {
fpp<<line;
}
}
void proceed (int kkraj, char *line,int lenght){
int i;
for (i = kkraj; i<=lenght; i++) {
fpp<<line;
}
}
void main(){
int i ,k, k2,k3;
char filename[12];
char *line;
cout<<"what is the name of the file";
cin>>filename;
fp.open (filename, ios :: in); //file to read from
if (!fp){
cout<<"\n error opening\n";
exit(0);
}
fpp.open("no commentary", ios:ut); //file to save non commentary
program to
if (!fpp){
cout << "Error opening file.\n";
}
while(line=fgets(fp)){
for(i=0; i<strlen(line); i++){
if ((line[i]==''/'')&&(line[i+1]==''/'')) {
k=i-1;
remove(k, line);
}
if ((line[i]==''/'')&&(!begin)&&(line[i+1]==''*'')) {
k2=i-1;
remove(k2, line);
begin=1;
}
if ((line[i]==''*'')&&(begin)&&(line[i+1]==''/'')){
k3=i-1;
begin=0;
proceed(k3, line, strlen(line)) ;
}
}
fp.close() ;
fpp.close() ;
return;
}
}
推荐答案
srenusa写道：
srenusa wrote:
我对c ++编程很新，我需要一些帮助
我的大学学生：
编写一个读取输入c ++文件并删除评论的程序。
评论可以是oneline（//）和块评论（/ ** /。
的名称是从命令行读取的文件。使用函数和全局
变量如果需要的话。
这里是我的代码。在此先感谢
I am quite new to c++ programming and I would need some help with
my college assigment:
write a program which reads input c++ file and removes commentary. The
commentary can be oneline(//) and block commentary(/**/. The name of
the file is read from the command line. use functions and global
variables if neccesary.
here is my code. Thanks in advance
你有什么样的帮助？想要吗？我没有尝试过，但我不希望这样。
编译。
我想看看删除和继续功能的描述
打算执行。我想看缩进。你的程序
是否允许/ *和匹配* /可以在不同的行上？
< snippage>
What kind of help do you want? I didn''t try, but I would not expect this to
compile.
I would like to see descriptions as to what the remove and proceed functions
are intended to perform. I would like to see indentation. Does your program
allow for the fact the /* and the matching */ can be on different lines?
<snippage>
> void remove（int kraj，char * line）{//删除''//' '并保存到文件
>void remove (int kraj, char *line){ //removes ''//'' and saves to file
肯定不是！？说明是删除评论，而不是
表示*是*评论
Surely not!? The instructions were to remove the commentary, not the thing
that indicates it *is* a commentary
fpp.open（no no comment，ios：ut）; //保存非评论的文件
fpp.open("no commentary", ios:ut); //file to save non commentary
我基于我在不编译该行时说的话。我认为它应该是
ios :: out。 *两个*更改我只是懒得扫描代码，看看我是否认为它可以编译。
I''m basing what I said on not compiling on that line. I think it should be
ios::out. *Two* changes I just scanned the code idly to see if I thought it
might compile.
我有一个不匹配的问题：无法将ifstream转换为char：
while（line = fgets（fp））{
for（i = 0; i< ; signed（strlen（line））; i ++）{
void remove（int kraj，char * line）{//删除''//''并保存到文件
我打算将此函数写入新文件所有字符
直到//
字符放在char行中我认为该行[1]
代表第一个字符。
fpp.open（" no appmentary"，ios：ut）; //文件保存非评论
tipfeller :)
thx为您提供帮助:)
I have a problem with mismatching: cannot convert ifstream to char:
while(line=fgets(fp)){
for(i=0; i<signed(strlen(line)); i++){
void remove (int kraj, char *line){ //removes ''//'' and saves to file
I intended this function to write to a new file all characters
until //
characters are placed in char line and I thought that line[1]
represents the first character.
fpp.open("no commentary", ios:ut); //file to save non commentary
tipfeller :)
thx for your help :)
sr*****@yahoo.com 写道：
我有一个不匹配的问题：无法将ifstream转换为char：
while（line = fgets（fp））{
I have a problem with mismatching: cannot convert ifstream to char:
while(line=fgets(fp)){
什么是''line = fgets（fp）''该怎么办？也许你需要RTFM
关于''fgets''和''ifstream''......
What is ''line=fgets(fp)'' supposed to do? Perhaps you need to RTFM
about ''fgets'' and ''ifstream''...
for（i = 0;我< signed（strlen（line））; i ++）{
[..]
for(i=0; i<signed(strlen(line)); i++){
[..]
V
-
请在通过电子邮件回复时删除资金''A'
我没有回复最热门的回复，请不要问
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
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