Converting float to ascii in C

C_to_be · 10-29-2007, 03:30 PM

Hi All:

I am using the IDE in CodeWarrior MPC555 V8.1. I used the atof function to convert a decimal input value from ascii to float.

Now, I am looking for a way to convert a float value to ascii for display. Unfortunately, the MPC555 does not have ftoa functionality.

I am not fluent in C, so any suggestions would be most appreciated!

Thanks,
C_to_be

BrianK · 10-29-2007, 03:47 PM

Quote:

Originally Posted by C_to_be

Hi All:

I am using the IDE in CodeWarrior MPC555 V8.1. I used the atof function to convert a decimal input value from ascii to float.

Now, I am looking for a way to convert a float value to ascii for display. Unfortunately, the MPC555 does not have ftoa functionality.

I am not fluent in C, so any suggestions would be most appreciated!

Thanks,
C_to_be

char foo[32];
sprintf(foo,"%f",some_float_val);

osor · 10-29-2007, 06:41 PM

Quote:

Originally Posted by BrianK

char foo[32];
sprintf(foo,"%f",some_float_val);

This can be safer (although it is highly unlikely to have a 32-character decimal representation for a float, it is helpful to teach novice C programmers to use safe programming practices):

Code:

char foo[32];
snprintf(foo, sizeof(foo), "%f", some_float_val);