How does printf and scanf connect to fputc and fgetc ?

Hi. I came across that fputc() is connected with printf() and fgetc is connected with scanf() in cortex-m3 uVision Keil firmware program. But I can't find exactly how does it connect between...
How does printf and scanf connect to fputc and fgetc ?

Hi. I came across that fputc() is connected with printf() and fgetc is connected with scanf() in cortex-m3 uVision Keil firmware program. But I can't find exactly how does it connect between...
sscanf() does not work correctly

When I use following statement in the code which runs on ARM9, it does not correctly parse the IP address. I am using standard function for sscanf(). main() { unsigned char ip[16]; sscanf("255...
sscanf() does not work correctly

When I use following statement in the code which runs on ARM9, it does not correctly parse the IP address. I am using standard function for sscanf(). main() { unsigned char ip[16]; sscanf("255...
Retargeting printf(), by writing custom fputc()

Hello! I have been reading on how to retarget printf() so I can direct it to my USART Tx. I have never done retargeting before (not even on other platforms) so this is new to me. Eventually I...