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Simple code question

Blasterreal

# 1
Caterpillar

Posts: 40 from 2007/3/30

Hi, i create simple Fahrenheit / Celcius converter with MUI, But i get little error, i think contents value must be float, how do that via MUI

Quote:

switch(id)
{

case MUIV_Application_ReturnID_Quit:
running = FALSE;
break;

case CALCULATE:
{
float cell;

get(fahrenText, MUIA_String_Contents, &contents);

cell =(5.0/9.0) * (contents - 32.0); //ERROR main.c:127: invalid operands to binary -

set(celciusText, MUIA_String_Contents, cell);

}
break;
»01.01.23 - 18:43

jacadcaps

# 2
MorphOS Developer

Posts: 3108 from 2003/3/5

From: Canada

MUIA_String_Contents must be a string, so you'll have to format your float into a temporary one first.
»01.01.23 - 19:13

Blasterreal

# 3
Caterpillar

Posts: 40 from 2007/3/30

Thx jaca,

Solition here, it work now

Quote:

switch(id)
{

case MUIV_Application_ReturnID_Quit:
running = FALSE;
break;

case CALCULATE:
{
float cell;
float value;
char value2[32];

get(fahrenText, MUIA_String_Contents, &contents);
value = atof (contents);
cell =(5.0/9.0) * (value - 32.0);

sprintf (value2, "%f", cell);

set(celciusText, MUIA_String_Contents, value2);

}
break;

}
»01.01.23 - 19:38