Path of file :filename variable

[sheriff]

Hi friends,

I am opening and reading a file and writing it in a new file.

int main()
{
 
  ifstream inputFile("C:\\TEMP\\test.txt");
  ofstream outputFile;
 
  outputFile.open("C:\\TEMP\\test3.txt");
 

But I want my new file (outputfile) as a variable

I have tried by adding strings but it doesnt work

int main()
{
 
ifstream inputFile("C:/TEMP/test.txt");
  ofstream outputFile;
  cout<<"Enter the outputfile name: "<<endl;
  cin>>file;
  string newfile=  ("C:/TEMP/"+ file);
  outputFile.open("newfile");
}

While using the above function the file has not been created and the data is not written.

Can anyone tell me how I can give the input of file name with the path specified?

Thanks in advance,

sheriff

[ilikepython]

Hi friends,

I am opening and reading a file and writing it in a new file.

int main()
{
 
  ifstream inputFile("C:\\TEMP\\test.txt");
  ofstream outputFile;
 
  outputFile.open("C:\\TEMP\\test3.txt");
 

But I want my new file (outputfile) as a variable

I have tried by adding strings but it doesnt work

int main()
{
 
ifstream inputFile("C:/TEMP/test.txt");
  ofstream outputFile;
  cout<<"Enter the outputfile name: "<<endl;
  cin>>file;
  string newfile=  ("C:/TEMP/"+ file);
  outputFile.open("newfile");
}

While using the above function the file has not been created and the data is not written.

Can anyone tell me how I can give the input of file name with the path specified?

Thanks in advance,

sheriff

You passed a string literal to open(). That means that it is trying to open a file called "newfile". Pass the actual value that the variable holds (without the quotes).

[sheriff]

You passed a string literal to open(). That means that it is trying to open a file called "newfile". Pass the actual value that the variable holds (without the quotes).

thx "ilike python"?

but without quotes

compiler says syntax is not right (no matchhing function)

[sicarie]

string newfile= ("C:/TEMP/"+ file);

Did you try changing this to

string newfile = "C:/TEMP/" + file;

[ilikepython]

thx "ilike python"?

but without quotes

compiler says syntax is not right (no matchhing function)

What's the error? Maybe it wants a c-string. Try:

outputfile.open(newfile.c_str());
 

[sheriff]

What's the error? Maybe it wants a c-string. Try:

outputfile.open(newfile.c_str());
 

hi ilikepython,

im not getting this c_str()function

im not good at this pointer things

can u tell me a little more abt y r u implying this here.. if possible?

by the way cstring is not working with my c++ compiler

as it is for visual c++ i hope!!!

[sheriff]

What's the error? Maybe it wants a c-string. Try:

outputfile.open(newfile.c_str());
 

thx python it is working

thx a lot

[ilikepython]

hi ilikepython,

im not getting this c_str()function

im not good at this pointer things

can u tell me a little more abt y r u implying this here.. if possible?

by the way cstring is not working with my c++ compiler

as it is for visual c++ i hope!!!

That function turns a string object into a char array. That is needed because open() function wants a char array, so if you put a string it will complain. But since you put the c_str() function, that makes it into a char array, so it works.

[ilikepython]

thx python it is working

thx a lot

I'm glad to help you