8 replies to this topic

[bexita]

Hi,
I have this text file, the format looks like this:

2      (no of modules)

Module123   (Module code)

Module100    


5

Module123   (Module code)

Module111

Module245

Module232

Module343

I want to read this into array of structure :
struct student {
int no_module;
--> how to declare variables for the module ?? <----
};
student a[];
file.open("data.txt" , ios ::in);

-->Because its based on the number of modules, if they are 2 , there are two modules which will be read or if they are 5 , there are 5 modules which will be read only. Anyone know how to read this text files ?
Thanks a lot.

[WingedPanther]

It looks like you would use an array of strings. Are you doing this in C or C++?

[bexita]

Im using C++ ,....

Can u explain more?

[WingedPanther]

Maybe I should back up. Since you haven't provided much code, I'm guessing you aren't worried about reading the file, just how to store it. The two methods for storing a large amount of data in sequence would be an array or std::vector. Given that the data you're storing appears to be strings ("Module123", "Module100", etc), it seems logical that you would store an array or vector of strings.

1) is that all correct?
2) does it make sense? If not, what part doesn't?

If you don't know what an array of strings is, then we have a much bigger problem. If I'm incorrect about the structure of the data to be stored, perhaps a clearer example is in order.

[denarced]

I'd say you need something like:

/** Read file line by line until line consists of a number.
 */
int readUntilCount(std::ifstream& files);

int main(int argc, char** argv)
{
    std::ifstream textFile("data.txt");
    if(textFile.is_open())
    {
        while(textFile.good())
        {
            const int moduleCount = readUntilCount(textFile);
            if(moduleCount < 1)
                break;
            for(int i=moduleCount; i > 0; --i)
            {
                ; //    
            }
        }
    }
    return 0;
}

[bexita]

Hi , my code looks like this but it displayed wrongly:

while (afile >> s[i].k_value)

	{

		

			

			afile >> s[i].name;

			afile >>s[i].no_module;


			int no= s[i].no_module;

			for (;i<no; i++)

			{

				afile.getline(s[i].m_code, MAX,'\n');

				

			}

		

		

	i++;

			

	}	 

whats wrong with this code of store?

[WingedPanther]

What are your variables?

[bexita]

struct student{

int k_value;

char name[200];

int no_module;

char module_code[200]

};


//Storing info in the txt file

while (afile >> s[i].k_value)  // a random student no stored in struct

	{		

			afile.getline (s[i].name,200,'\n');

			afile >>s[i].no_module;// till here its ok for output text file.


			int no= s[i].no_module; 

			for (int j=0;j<no; j++) 

			{

				afile >> s[i].module_code[j]; // it displayed wrong in the output file

				

			}

		

		

	i++;

			

	}

I still stuck at storing the info of this text file. Pls advise.
THanks

[WingedPanther]

Here's your biggest problem. You are not posting code that anyone else can compile. s is not defined. afile is not defined. What is your code?