Computer scienceProgramming languagesJavaScriptBasicsOperations

Increment and Decrement

Theory

Decrement

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Write the sum function that returns the sum of three variable values, where each is decreased by one. Use variables a, b and c as function parameters.

Remember the difference between prefix and postfix increment.

Sample Input 1: 

10 11 -2

Sample Output 1: 

16

Sample Input 2: 

1 1 0

Sample Output 2: 

-1
Write a program in JavaScript
// Write your code here
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