Arduino Connectivity with a c program

Hey, Guyz......

I am a beginner in this field and really need your help to solve a problem, That is, I want to connect a C program to my Arduino.... in other words, I just need to send data from C program to my Arduino.... please help me to overcome this problem..... I really thank you guys if you help me.

For the code on the Arduino side have a look at the examples in Serial Input Basics - simple reliable ways to receive data.

A similar technique will work on any program.

The system in the 3rd example will be the most reliable.

...R

I really thank you guys if you help me.

With the Arduino code? Robin2 has that covered?

With the PC code? The playground has that covered.