String Manipulation

[David Sharp]

Hi,

I am trying to write a routine which opens a file, reads a line and
splits the line in two, each of the two words per line going into
different variables. For example:

The line in the file reads :

MOVB,12

MOVB is placed in the variable 'char *operand'.
12 is placed in the variable 'char variable'

I have tried many things but keep messing up!

Any ideas?

Thanks

David Sharp

 

[Jon Bell]

I have tried many things but keep messing up!

Show us one of your attempts and someone will probably be happy to comment
on it.

 

[John Harrison]

Hi,

I am trying to write a routine which opens a file, reads a line and
splits the line in two, each of the two words per line going into
different variables. For example:

The line in the file reads :

MOVB,12

MOVB is placed in the variable 'char *operand'.
12 is placed in the variable 'char variable'

I have tried many things but keep messing up!

Any ideas?

Thanks

David Sharp

Without seeing any code, I only have one idea.

Instead of using char* for your strings (which as you've found is very
tricky), use the C++ string class 'std::string' instead which is much
easier.

Using std::string instead of char* will mean you have to unlearn some of
what you've already learned but it will be worth it on the long run.

john

 

[Thomas Matthews]

Hi,

I am trying to write a routine which opens a file, reads a line and
splits the line in two, each of the two words per line going into
different variables. For example:

The line in the file reads :

MOVB,12

MOVB is placed in the variable 'char *operand'.
12 is placed in the variable 'char variable'

I have tried many things but keep messing up!

Any ideas?

Thanks

David Sharp

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using std::ifstream;
using std::string;

int main(void)
{
ifstream my_file("my_data.txt");
if (!my_file)
return EXIT_FAILURE;

string instruction;
unsigned int value;
//...
getline(my_file, instruction, ',');
my_file >> value;
// ...
cout << "instruction: " << instruction << '\n';
cout << "value: " << value << '\n';

return EXIT_SUCCESS;
}


--
Thomas Matthews

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