Two or more data types in declaration of 'setup' error message

Projects Programming
1

hi I'm having trouble with the two or more data types in declaration of 'setup' err and cant figure out what wrong in trying to make a decorative terminal with different modes I got to a certain point in it and I decided do do a check and this came up

here is my code

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows
int led = LED_BUILTIN;
int 
void setup(){
    lcd.init(); // initialize the lcd
  lcd.clear();
  lcd.backlight();
  pinMode(1, INPUT);
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  }
void loop(){
  int k;
  int l;
lcd.setCursor(0,0);
lcd.print("engaging...");
  for (int i = 0; i <= 100; i++){
    lcd.setCursor(0,1);
    lcd.print(i);
    delay(100);
    lcd.setCursor(3,1);
    lcd.print("%");
    }
    delay(1000);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("welcome");
    lcd.setCursor(0,1);
    lcd.print("blip terminal");
    delay(5000);
    int l = int readbutton(1,0,0,0,0)
    int k = int readbutton(0,1,0,0,0)

        }
  }

  int readbutton(int q,int w,int e,int r,int t){
    int buttonState1;
    int buttonState2;
    int buttonState3;
    int buttonState4;
    int buttonState5;
    if(q = 1){
      buttonState1 = digitalRead(1);
      
      return buttonState1;
      }
    if(w = 1){
      buttonState2 = digitalRead(2);
       
      return buttonState2;
      }
    if(e = 1){
      buttonState3 = digitalRead(3);
       
      return buttonState3;
      }
    if(r = 1){
      buttonState4 = digitalRead(4);
       
      return buttonState4;
    }
    if(t = 1){
      buttonState5 = digitalRead(5);
       
      return buttonState5;
      }
    
    
    }
2

The error will declare what is duplicated. Copy/paste the error here to help find it.

Do you have a library that uses lcd.begin() versus lcd.init()?

3

What is that int doing there on the line before void setup()?

4

And many other places …

5

Three errors in one line:

  • if it is a function, the int before the name is superfluous
  • no semicolon at the end of the line
  • the function call is useless because the result is assigned to a local variable, which is destroyed when the block exits in the next line of code.

...and many many other errors in other lines
@blipcodes
I would advise you to read the C language tutorial first - it will save you a lot of time

6

yah I'm a beginner thx

7

idk my code can be weird at times

8

my full err message

Arduino: 1.8.19 (Windows 10), Board: "Arduino Uno"





















termanal:3:16: error: two or more data types in declaration of 'setup'

 int led = LED_BUILTIN;

                ^

termanal:5:12: error: two or more data types in declaration of 'setup'

 void setup(){

            ^

C:\Users\User\OneDrive\Documents\Arduino\termanal\termanal.ino: In function 'void loop()':

termanal:34:9: error: redeclaration of 'int l'

     int l = int readbutton(1,0,0,0,0)

         ^

C:\Users\User\OneDrive\Documents\Arduino\termanal\termanal.ino:17:7: note: 'int l' previously declared here

   int l;

       ^

termanal:34:13: error: expected primary-expression before 'int'

     int l = int readbutton(1,0,0,0,0)

             ^~~

C:\Users\User\OneDrive\Documents\Arduino\termanal\termanal.ino: At global scope:

termanal:38:3: error: expected declaration before '}' token

   }

   ^

exit status 1

two or more data types in declaration of 'setup'
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
9

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