Thread: Unite Testing in c

I'm currently trying to grasp the concept of unit testing, particularly in the context of c program. I've gone through some resources, but I'm still struggling to fully understand how to apply it practically.

Embedded C/C++ Unit Testing Basics - GeeksforGeeks

From what I gather, unit testing is important for identifying bugs and errors in code. However, I'm having trouble figuring out the process of implementing unit testing for a program.

Take a simple example

Code:

  #include<stdio.h>

int ADD ( int x, int y);

int main()
{
    int a = 10;
    int b = 2;
    int result;
    
    result = ADD ( a, b);
    
    printf(" Result : %d", result);
    
    return 0;
}

int ADD ( int x, int y)
{
    int r = x + y;
    return r;
}

Could someone kindly provide a straightforward explanation or perhaps a simple example to illustrate how unit testing works?