Summing method in c language

Two methods for summation in C language: Use for loop: suitable for situations where the array is small or flexibility is required. Using pointers: Suitable for situations where the array is large or efficiency needs to be improved.

Sum method in C language

There are many methods for summation in C language, the specific choice depends on Depending on the size of the array, data type and required efficiency. The two most commonly used summation methods are introduced below:

Using a for loop

int sum = 0;
for (int i = 0; i < n; i++) {
  sum += arr[i];
}

Where:

• sum is a variable used to store the sum, initialized to 0.
• arr is the array to be summed.
• n is the size of the array.

Use pointers to elements

int sum = 0;
int *ptr = arr;
for (int i = 0; i < n; i++) {
  sum += *ptr;
  ptr++;
}

where:

• sum and n Same as above.
• ptr is a pointer to the first element of the array, initialized using arr.
• *ptr Dereference pointer to access the value of the current element.

Choose a method

• When the array is smaller, a for loop is usually simpler and faster.
• When the array is large, using pointers can improve efficiency because array copying is avoided.
• If you want to handle different data types (such as float or double), you need to modify the data type declaration in the code accordingly.

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