Arduino nano doesn't read sd card properly

Other Hardware Storage
1

So I want to store a number on an sd card in a txt file and display it on an lcd, When the number is read the lcd just displays it as the number it should, but as soon as I set the number gotten from the sd card to an int it only adds the first number. Yes the code is messy. sorry in advance

code:

//set up display
#include <Wire.h> // Library for I2C communication
#include <LiquidCrystal_I2C.h> 
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2); 

//set up sd card
#include <SPI.h>
#include <SD.h>

//Setting up int64
#include <Int64String.h>

//set up button
int buttonState;
int isUsed;
const int buttonPin = 7;

int startup = 0;

int onetimer = 0;

int amountOfPresses = 0;

void setup() {
  // Initiate the LCD:
  lcd.init();
  lcd.backlight();

  Serial.begin(9600);
  
  //set button to input
  pinMode(buttonPin, INPUT);
}

void loop() {
  if(startup == 0){
    if (!SD.begin(10)){
      lcd.print("No SD card found");
      while(!SD.begin(10));
  }

   lcd.print("Reading file...");
   delay(1000);
    File dataFile = SD.open("data.txt");
    if(dataFile){
      lcd.clear();
      while(dataFile.available()){
        char number = dataFile.read();
        lcd.print(number);
        if(onetimer == 0){
          String number2 = String(number);
          amountOfPresses = number2.toInt();
          Serial.println(amountOfPresses);
          Serial.println(number2);
          Serial.println(number);
          onetimer = 1;
        }
      }
      dataFile.close();
    }
    
    
  }
  
  
  int pressed = digitalRead(buttonPin);
  
  if(pressed == LOW && isUsed == 0){
    isUsed++;
  
    amountOfPresses++;
  
    lcd.clear();
    lcd.print(amountOfPresses);
  
    if(String(amountOfPresses).endsWith("0")){
      Serial.println(amountOfPresses);
      SD.remove("data.txt");
      File dataFile = SD.open("data.txt", FILE_WRITE);
      if(dataFile){
        dataFile.print(amountOfPresses);
        dataFile.close();
        }else{
          Serial.println("Failed to get data.txt");
        }  
    }
  }else if(pressed == HIGH && isUsed == 1){
    delay(10);
    isUsed = 0;
  }
}
2

Why do you initialise your SD card in the loop over and over and over?

3

I put it in a loop so maybe the number would start adding up correctly, also it doesn't loop the initialisation because it's in an if statement that goes that is false after executing it once

4

You sure about that?

5

Accidently removed the startup++;

even after adding that it doesn't function correctly

6

At the moment it displays 60 (the last saved number), but when I press the button that's supposed to make it go up it goes to 7

7

Fixed it with the code:

      String number = "";
      while (dataFile.available()) {
        number += (char)dataFile.read();
      }