Concatenate a counter at a specific position in a String

Projects Programming
1

Good afternoon,

Excuse my inexperience in the world of Arduino, I am trying to print directly from Arduino to a thermal printer, this thermal printer uses the STPL language, to get it to print I use the STPL language in the form of strings, I leave you a first example that every time I I press the button prints the number 1:

const int boton1 = 8;
bool valorBoton1, valorBotonAnt1 = false;
int count = 0;


void setup() {

Serial.begin(19200);
pinMode(boton1,INPUT);
}

void loop() {

  valorBoton1 = digitalRead(boton1);

if (valorBoton1 && !valorBotonAnt1){
 
  Serial.print("SIZE 72 mm,50 mm\r\n");     /*aqui le decimos a la impresora el tamaño del papel*/

  Serial.print("TEXT 5,350,\"3.EFT\",0,7,7,\"1 \"\r\n");    /*aqui imprimo el numero 1*/

  Serial.print("PRINT 1,1\r\n");   /*aqui mando la función de imprimir*/
 

}
valorBotonAnt1 = valorBoton1;
delay (5);
}

What I want is instead of printing only the number 1, I want to print the value of a counter, so that every time I press the button, it prints a different number: 1, 2, 3, 4 .. ....
But I can't integrate a counter in the chain:

Serial.print("TEXT 5,350,\"3.EFT\",0,7,7,\"1 \"\r\n");

I will be very grateful for any help or suggestion.

Thanks in advance.

2

Take a look at the sprintf() function

3

thank you for your support, excuse my ignorance in the world of arduino, i don't know how the function sprintf() works
what i want to do is integrate a counter i, inside the string like: Serial.print("TEXT 5,350, " 3.EFT \ ", 0,7,7, " {0} "\ r \ n", i) being {0} the position of the counter i.

4

Or

    Serial.print("SIZE 72 mm,50 mm\r\n");     /*aqui le decimos a la impresora el tamaño del papel*/
    Serial.print("TEXT 5,350,\"3.EFT\",0,7,7,\"");
    Serial.print(value);
    Serial.print(" \"\r\n");    /*aqui imprimo el numero 1*/
    Serial.print("PRINT 1,1\r\n");   /*aqui mando la función de imprimir*/
5

i don't know how the function sprintf() works

//Serial.print("TEXT 5,350,\"3.EFT\",0,7,7,\"1 \"\r\n");    /*aqui imprimo el numero 1*/
  count +=1;
  char message[40] = " ";
  sprintf(message,"TEXT 5,350,\"3.EFT\",0,7,7,\"%d \"\r\n", count);//%d places an integer at location
  Serial.println(message);

UKHeliBob's suggestion of the multi statement printing is a more simple approach.

6

thank you so much, you are the best, thank you cattledog, and thank you UKHeliBob, both solutions are right!!