Thread: Passing String to Function (Without Previous String Declaration)

Is there a way to do this without declaring the strings "Line 1" or "Line 2" at the beginning of main? (see below)

The function call from main:

Code:

printLCD("Line 1","Line 2");

function code:

Code:

void printLCD(const unsigned char* s_line1, const unsigned char* s_line2)
{
    // Code for printing to LCD display here
}

Change your printLCD to

Code:

void printLCD(char* s_line1, char* s_line2)

and it should work fine.

Thanks for the quick reply.

I tried your suggestion, I still get a "type qualifier mismatch" warning message and what is printed out on the LCD screen is jumbled garbage.

Also, I'm using the MPLAB C18 compiler.

Appreciate the help as I'm a bit rusty on my C programming.

I'm not familiar with that compiler.

I compiled this on VS and it works OK, see if it works for you.

Code:

void print(char *foo, char *bar)
{
    printf("%s %s\n", foo, bar);
}

int main(void)
{
    print("foo","bar");
    return 0;
}

Code:

void printLCD(const char* s_line1, const char* s_line2)

should work without any compiler warnings.