I have a problem with declaring an array. C language, Atmel Studio

Question

this is my code and I have a problem with array.

int main(void)
{
    PORTD = 0x01;
    LCDOUT();
    
char count = 0;
char firstLine[] = "Number of count";
char secondLine[] = {count};


while (1)
{
    Command(HOME);
    LCD_String(firstLine);
    Command(LINE2);
    LCD_String(secondLine);
    
    if ((PIND&0x01)==0x00) 
    {


        count++;
            _delay_ms(500);
        }
    }
}

I want to make

char secondLine[] = "0"; when the code starts.

And if ((PIND&0x01) == 0x00)), then

secondLine[] = "1"

secondLine[] = "2"

secondLine[] = "3"

...

...

So in the secondLine, the number of counts can be shown through LCD.

Answer 1

The function snprintf() is supporting your goal.

https://en.cppreference.com/w/c/io/fprintf

It allows to create string representation of parameters.

Make sure that there is enough space in char secondLine[2]; and that you use the length parameter ( size_t bufsz ) to not write beyond.

You will have to do the printing inside your loop, so that the string content is updated along with count++.