I need help with this function Edit File of a program i am working on.
This is what it should do...
You have a text file created like this for example
10
20
30
40
50
This function should let you choose what line you want to edit...
For example you want to change line three and make it say 12 so now the file should look like
10
20
12
40
50
This is the code (Im putting the entire program in here incase something else needs to be changed)
#include<iostream.h>
#include<lvp\string.h>
#include<fstream.h>
#include<stdio.h>
void CreateTextFile(String & FileName, String Data);
void CreateNumberFile(String FileName,int NumScores,double Score,double Sum);
void ViewFile(String FileName,String Text);
void RenameFile(String NewName,String FileName);
void DeleteFile(String FileName);
void EditFile(String FileName,String S,int LineNum,int charcount,double newdata);
void AppendFile(String FileName,String ExtraCode,String Text);
int main()
{
int LineNum=0;
int NumScores=0;
double Score=0;
double Sum=0;
double newdata=0;
char choice;
int charcount=0;
String S;
String FileName;
String Data;
String Text;
String repeat;
String NewName;
String ExtraCode;
do{
cout<<"Welcome to the file creator Program."<<endl;
cout<<"------------------------------------"<<endl;
cout<<"Press 1 to Create a Text File."<<endl;
cout<<"Press 2 to Create a Number File."<<endl;
cout<<"Press 3 to View a File."<<endl;
cout<<"Press 4 to Rename a File."<<endl;
cout<<"Press 5 to Delete a File."<<endl;
cout<<"Press 6 to Edit a File."<<endl;
cout<<"Press 7 to Append a File."<<endl;
cout<<endl;
cout<<"Enter Choice:";
cin>>choice;
cout<<endl;
if(choice=='1')
CreateTextFile(FileName,Data);
else if(choice=='2')
CreateNumberFile(FileName,NumScores,Score,Sum);
else if(choice=='3')
ViewFile(FileName,Text);
else if(choice=='4')
RenameFile(NewName,FileName);
else if(choice=='5')
DeleteFile(FileName);
else if(choice=='6')
EditFile(FileName,S,LineNum,charcount,newdata);
else if(choice=='7')
AppendFile(FileName,ExtraCode,Text);
else
{
cout<<"Invalid Choice"<<endl;
cout<<"Re-enter Choice:"<<endl;
cin>>choice;
}
cout<<"Would you like to choose another selection:(yes/no)";
cin>>repeat;
system("cls");
}while(repeat=="yes");
return(0);
}
//------------------------------------------------------------------
void CreateTextFile(String & FileName, String Data)
{
cout<<"Name of the File you would like to make:";
cin.ignore();
getline(cin,FileName);
ofstream OutFile;
OutFile.open(FileName.c_str());
if(OutFile.fail())
{
cout<<"File has not been written."<<endl;
}
else
{
cout<<"Enter text of Code."<<endl;
while(Data!="end")
{
getline(cin,Data);
OutFile<<Data<<endl;
}
}
}
//------------------------------------------------------------------
void CreateNumberFile(String FileName,int NumScores,double Score,double Sum)
{
cout<<"Name of File you would like to make:";
cin.ignore();
getline(cin,FileName);
ofstream OutFile;
OutFile.open(FileName.c_str());
cin.ignore();
if(OutFile.fail())
{
cout<<"File has not been written."<<endl;
}
else
{
cout<<"--------------------------------------------------"<<endl;
cout<<"--------------------SCORES------------------------"<<endl;
cout<<"--------------------------------------------------"<<endl;
cout<<"Enter Number of Scores:";
cin>>NumScores;
for(int i=1;i<=NumScores;i++)
{
cout<<"Enter Score "<<i<<":";
cin>>Score;
OutFile<<i<<"."<<Score<<endl;
Sum+=Score;
}
cout<<"Number of Scores:"<<NumScores<<endl;
cout<<"Total of Scores:"<<Sum<<endl;
cout<<"Average of Scores:"<<(Sum/NumScores)<<endl;
}
}
//----------------------------------------------------------------
void ViewFile(String FileName,String Text)
{
cout<<"What is the Name of the File you would like to read."<<endl;
cin.ignore();
getline(cin,FileName);
ifstream InFile(FileName.c_str(),ios::nocreate);
if(InFile.fail())
{
cout<<"Program Can Not Be Read."<<endl;
}
else
{
while(getline(InFile,Text))
{
cout<<">"<<Text<<endl;
}
}
}
//-------------------------------------------------------------------------
void RenameFile(String NewName,String FileName)
{
cout<<"What File would you like to rename:";
cin.ignore();
getline(cin,FileName);
cout<<"What Would you like the new file Name to be:";
getline(cin,NewName);
rename(FileName.c_str(),NewName.c_str());
}
//--------------------------------------------------------------------------
void DeleteFile(String FileName)
{
cout<<"What File would you like to delete:"<<endl;
cin.ignore();
getline(cin,FileName);
remove(FileName.c_str());
if(remove(FileName.c_str())==0)
cout<<"File has not been deleted."<<endl;
else
cout<<FileName<<" has been removed"<<endl;
}
//------------------------------------------------------------
void EditFile(String FileName,String S,int LineNum,int charcount,double newdata)
{
fstream EditFile(FileName.c_str(),ios::in|ios::out);
cout<<"What File would you like to edit:"<<endl;
cin.ignore();
getline(cin,FileName);
fstream InFile;
InFile.open(FileName.c_str(),ios::in|ios::out);
while(getline(InFile,S))
{
cout<<S<<endl;
}
cout<<"What Line do you want to change:";
cin>>LineNum;
for(int i=0;i<LineNum;i++)
{
charcount+=S.length();
charcount+=2;
}
InFile.close();
EditFile.open(FileName.c_str(),ios::in|ios::out);
cout<<"Enter new data:";
cin>>newdata;
EditFile.seekp(charcount);
EditFile<<newdata;
EditFile.close();
}
//-----------------------------------------------------------------
void AppendFile(String FileName,String ExtraCode,String Text)
{
cout<<"Enter File to Append to."<<endl;
cin>>FileName;
fstream AppendFile;
AppendFile.open(FileName.c_str(),ios::in|ios::out);
while(getline(AppendFile,Text))
{
cout<<">"<<Text<<endl;
}
AppendFile.close();
AppendFile.open(FileName.c_str(),ios::in|ios::out);
AppendFile.seekp(0, ios::end);
cout<<"Enter New Lines of Code."<<endl;
while(ExtraCode!="end")
{
getline(cin,ExtraCode);
AppendFile<<ExtraCode<<endl;
}
AppendFile.close();
}
