Example of Functionally Duplicate Code
Consider the following code snippet for calculating the average of an array of integers
extern int array1; extern int array2; int sum1 = 0; int sum2 = 0; int average1 = 0; int average2 = 0; for (int i = 0; i < 4; i++) { sum1 += array1; } average1 = sum1/4; for (int i = 0; i < 4; i++) { sum2 += array2; } average2 = sum2/4;The two loops can be rewritten as the single function:
int calcAverage (int* Array_of_4) { int sum = 0; for (int i = 0; i < 4; i++) { sum += Array_of_4; } return sum/4; }Using the above function will give source code that has no loop duplication:
extern int array1; extern int array2; int average1 = calcAverage(array1); int average2 = calcAverage(array2);Read more about this topic: Duplicate Code
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