sum in c code example

Example 1: c defined value sum

#define VALUE_A 2
#define VALUE_B 2
#define SUM_A_B (VALUE_A + VALUE_B)

Example 2: sum of n natural numbers in c

int addNumbers(int n)
{
    int count, sum = 0;

    for(count=1; count <= n; count++)
    {
        sum = sum + count;
    }
  
    return sum;
}