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Reading from a file and storing the first Integer as a String and the rest as Integers


Reading from a file and storing the first Integer as a String and the rest as Integers

By : user2185404
Date : November 21 2020, 04:01 AM
To fix the issue you can do You can use the following approach. Iterate lines, split it, take first as string and other two as integer (assuming that you have data as
code :
1 2 3
4 5 6
7 8 9
List<String> listS = new ArrayList();
List<Integer> listI = new ArrayList();
// try with resource automatically close resources
try (BufferedReader reader = Files.newBufferedReader(Paths.get("res.txt"))) 
{
    reader.lines().forEach(line -> {
        String[] ints = line.split(" ");
        listS.add(String.valueOf(ints[0]));
        listI.add(Integer.parseInt(ints[1]));
        listI.add(Integer.parseInt(ints[2]));
    });

} catch (IOException e) {
    e.printStackTrace();
}


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Reading and storing integers in a file

Reading and storing integers in a file


By : Oladimeji Joseph Fak
Date : March 29 2020, 07:55 AM
around this issue I have a file.txt such as : , You can use a std::ifstream to read file content:
code :
#include <fstream>
std::ifstream infile("filename.txt");
#include <sstream>
#include <string>
std::string line;
std::getline(infile, line);
std::istringstream iss(line);
int a;
int b;
int c;

iss >> a >> b >> c;
Storing integers and arrays in a file and reading them

Storing integers and arrays in a file and reading them


By : zsun
Date : March 29 2020, 07:55 AM
This might help you The easiest way to do this is by using serialization. To store your information in a file, use a FileOutputStream and an ObjectOutputStream (from the java.io package), like this:
code :
File saveFile = new File("filename.sav");
try {
    FileOutputStream fileOut = new FileOutputStream(saveFile);
    try (ObjectOutputStream objOut = new ObjectOutputStream(fileOut)) {
        objOut.writeObject(number); // you should use lower case for variable names
        objOut.writeObject(array);
    }
} catch (IOException e) {
}
try {
    FileInputStream fileIn = new FileInputStream("filename.sav");
    try (ObjectInputStream objIn = new ObjectInputStream(fileIn)) {
        int number = (int) objIn.readObject();
        int[] array = (int[]) objIn.readObject();
    }
} catch (IOException | ClassNotFoundException e) {
}
Reading integers from a file and storing in an array

Reading integers from a file and storing in an array


By : Abdallah Bouassida
Date : March 29 2020, 07:55 AM
I wish this helpful for you I ran your code the result is ok in Dev-C++ compiler. Maybe you can change a compiler for your code. Here is PDB file information,seem you can ignore the error messages.
Storing integers from a text file into an integer array

Storing integers from a text file into an integer array


By : user5456054
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have a problem with an exercise, the statement is the following: , I've saved the matrix by reading one character at a time.
code :
for(i=0;i<7;i++)
{
    for(j=0;j<10;j++)
    {
        do
        {
            // i've declared a character ch to read each character
            ch=getc(file);
        }while(ch!='0' && ch!='1'); 
        matriu[i][j]=(ch-'0');//converting char to integer
    }
}
#include <stdio.h>


int main()
{
    int i,j,matriu[7][10];
    char ch; //the character 
    FILE * file;
    file=fopen("matriu.txt", "r");

    for(i=0;i<7;i++) //the mechanism
    {
        for(j=0;j<10;j++)
        {
            do
            {
                ch=getc(file);
            }while(ch!='0' && ch!='1');
            matriu[i][j]=(ch-'0');
        }
    }

    for (i=0; i<7; i++)
    {
        for (j=0; j<10; j++)
        {
            printf("%d\n", matriu[i][j]);

        }
    }
    fclose(file); //you forgot this in your code
    return 0;
 }
Reading integers from an input file, storing only the unique integers in the array C++

Reading integers from an input file, storing only the unique integers in the array C++


By : Valdermito dev. Vald
Date : March 29 2020, 07:55 AM
around this issue If std::set is allowed, use it instead of doing your own duplication check.
For your code, the problem happens here:
code :
while (!input.eof())
{
    //for loop not needed
    for (int i = 0; i <= MAX_SIZE; i++) //increment regardless whether input is successful or not?
    {
        input >> checker; //take in a number
        //if the number is not repeated
        if (!RepeatCheck(storage, MAX_SIZE, checker)) 
        {
            input >> storage[i]; //read in another number to put it?
        }

    }
}
bool RepeatCheck(int storage[], int size, int checker)
{
    for (int i = 0; i <= MAX_SIZE; i++) 
    //check all values in the array regardless whether it has been used or not?
    //should just check until the end of used space, which is what size is meant for
    {
        if (storage[i] == checker)
        {
            return false;
        }
    }
    //there should be a return true here right?
}
int i = 0;
while (input >> checker)
{
    if (!RepeatCheck(storage, i, checker))
    {
        storage[i] = checker;
        ++i;
    }
}
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