Well another day, another wrestling match with cstrings...
I'm having trouble converting a float to a cstring.
When I run the following:
float height = 1.75;
char response[20];
dtostrf(response, 5, 2, height);
Serial.println(response);
I get the error:
"cannot convert 'char*' to 'double' for argument '1' to 'char* dtostrf(double, signed char, unsigned char, char*)'"
I don't imagine anyone knows what I'm doing wrong?
dtostrf(height, 5, 2, response);
See dtostrf()
Thank you!
When all else fails, RTFM 
1. This is the syntax of dtostrf() function.
2. This is your declaration.
dtostrf(response, 5, 2, height);
3. Try to find the errors in your declaration in view of Step-1.
4. This is my declaration/codes that give correct result.
void setup()
{
Serial.begin(9600);
double height = 1.75;
char response[20];
dtostrf(height, 4, 2, response);//, 5, 2, height);
Serial.println(response);
for(int i = 0; i<4; i++)
{
Serial.print(response[i], HEX); //shows the ASCII codes of 1 . 7 5 : 31 2E 37 35
}
}
void loop()
{
}
4. This is the screenshot containing my result of the sketch of Step-3
5. This is the ASCII Table to check the correctness of the codes shown in Fig-1.
UKHeliBob:
When all else fails, RTFM
Read the sweet examples?
GolamMostafa:
Read the sweet examples?
Something like that
