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Topic: error: invalid conversion from 'const char*' to 'int' (Read 1 time) previous topic - next topic

Nivin37

Hi,

when changing from...

Code: [Select]

void top_menu_function_5() //Replace this with the actual function of menu item #5
{
    int choice=yn_dialog("Start");
    lcd.clear();
    lcd.setCursor(0,1);
    lcd.print(choice); // Display the user choice one more time
    delay(user_input4);
    int motorspeed = 100;  // This sets up the speed the motor will turn
    motor2.step(user_input3, BACKWARD, SINGLE);  //Move the motor forward by the number of "Steps per frame
    motor2.release();  //  make sure the motor is at rest.
   wait_on_escape(4000);
   
}


to...

Code: [Select]

void top_menu_function_5() //Replace this with the actual function of menu item #5
{
    int yn_dialog("Start");
    lcd.clear();
    lcd.setCursor(0,1);
    //lcd.print(choice); // Display the user choice one more time
    delay(user_input4);
    int motorspeed = 100;  // This sets up the speed the motor will turn
    motor2.step(user_input3, BACKWARD, SINGLE);  //Move the motor forward by the number of "Steps per frame
    motor2.release();  //  make sure the motor is at rest.
   wait_on_escape(4000);
   
}


I get this error...

Code: [Select]

My_Menu_2_0.cpp: In function 'void top_menu_function_5()':
menu:202: error: invalid conversion from 'const char*' to 'int'


If you need the full sketch, please ask.

Can someone point out what I'm doing wrong.

Thanks.

Steve...

Nick Gammon

What is the intention of this line?

Code: [Select]
    int yn_dialog("Start");

Nivin37


What is the intention of this line?

Code: [Select]
    int yn_dialog("Start");


I'm using phi_prompt as a menu for a sketch with a LCD.

This is an extract from the document on phi_prompt.

13) int yn_dialog(char msg[]);
Parameters:
This renders a YES/NO dialog so the user can choose YES or NO.
Return values:
1 for YES and 0 for NO so the program can decide what to do in case of YES and NO. The dialog auto scales to occupy the entire display so you don?t have to specify you have a 20X4 display or 16*2 display. See fig. 6-3 below.
Eg. int choice=yn_dialog("Engage death ray now?");
(a)
(b)
Figure 6-3. YES/NO dialog auto scales on 16X2 and 20X4 displays. (a) 16X2 display. (b) 20X4 display. Intended message was "Engage death ray now?". The text is automatically wrapped to occupy multiple lines. The message will be clipped if it doesn?t fit on a smaller display.

Steve...

Nick Gammon

Code: [Select]
Eg. int choice=yn_dialog("Engage death ray now?");

Yes, so why did you get rid of the variable that holds the response? The way you have it you are calling the function but discarding the result.

Nick Gammon


Hi,

when changing from...

Code: [Select]

...
    int choice=yn_dialog("Start");
...


to...

Code: [Select]

...
    int yn_dialog("Start");
 ...


I get this error...



Put it another way. Why did you make this change in the first place?

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