40 Summing array elements and updating array
Summing Array Elements and Updating Array in Arduino
In Arduino programming, you can easily sum the elements of an array using a for loop. You can also update each element during the loop based on a formula, condition, or external input.
Let’s walk through both tasks step-by-step.
✅ 1. Summing Elements of an Array
cpp
CopyEditint numbers[] = {5, 10, 15, 20, 25};
? 2. Updating Elements in an Array
You can modify elements in-place. For example, doubling each value:
cpp
Serial.println(numbers[i]); // Outputs: 10, 20, 30, 40, 50
}
while (true); // Stop repeating
}
? Combined: Sum + Update Array
cpp
CopyEditint data[] = {2, 4, 6, 8};
int sum = 0;
void setup() {
Serial.begin(9600);
data[i] += 1; // Update: increment each value by 1
sum += data[i]; // Add updated value to sum
}
Serial.print("Updated Sum: ");
Serial.println(sum); // Output: 3 + 5 + 7 + 9 = 24
}
? Tips
Always make sure your loop limit matches your array size.
You can perform any type of math inside the loop (add, subtract, multiply, etc.).
You can update based on sensor data, conditions, or real-time input.
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