size(300, 300);
background(255, 255, 0);

int iterate = 9; // number of loop iterations
int sum = 0;     // sum of odd numbers
int step = 25;   // next position for text line

fill(0);

for(int i = 0; i < iterate; i++){
  if(i % 2 == 0){
    text("Even value: "+i, 20, step);
    step = step + 25;
  }
  else{
  sum = sum + i;
  }
}

// sum of odd numbers

text("Sum of odd numbers: " +sum, 20, step);