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What is returned by the call go ( 4 )? public static int go(int x) { int q=0; while( x > 0) { q X || || q + x; 1; } return q;

What is returned by the call go ( 4 )? public static int go(int x) { int q=0; while( x > 0) { q X || || q + x; 1; } return q;

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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What is returned by the call ? Thank you 

### What is Returned by the Call `go(4)`? ```java public static int go(int x) { int q = 0; while (x > 0) { q = q + x; x = x - 1; } return q; } ``` ### Explanation: This is a simple Java program where a function `go` takes an integer `x` as a parameter and performs operations within a `while` loop. 1. **Initialization:** - A variable `q` is initialized to 0. 2. **While Loop:** - The loop continues to run as long as `x` is greater than 0. - Inside the loop: - `q` is incremented by the current value of `x`. - `x` is decremented by 1. 3. **Return Statement:** - Once the loop completes, the function returns the value of `q`. ### Calculation when called with `go(4)`: - **Iteration 1:** `x = 4`, `q = 0 + 4 = 4` - **Iteration 2:** `x = 3`, `q = 4 + 3 = 7` - **Iteration 3:** `x = 2`, `q = 7 + 2 = 9` - **Iteration 4:** `x = 1`, `q = 9 + 1 = 10` - **Loop Ends:** `x = 0` Thus, the function call `go(4)` returns `10`.
Transcribed Image Text:### What is Returned by the Call `go(4)`? ```java public static int go(int x) { int q = 0; while (x > 0) { q = q + x; x = x - 1; } return q; } ``` ### Explanation: This is a simple Java program where a function `go` takes an integer `x` as a parameter and performs operations within a `while` loop. 1. **Initialization:** - A variable `q` is initialized to 0. 2. **While Loop:** - The loop continues to run as long as `x` is greater than 0. - Inside the loop: - `q` is incremented by the current value of `x`. - `x` is decremented by 1. 3. **Return Statement:** - Once the loop completes, the function returns the value of `q`. ### Calculation when called with `go(4)`: - **Iteration 1:** `x = 4`, `q = 0 + 4 = 4` - **Iteration 2:** `x = 3`, `q = 4 + 3 = 7` - **Iteration 3:** `x = 2`, `q = 7 + 2 = 9` - **Iteration 4:** `x = 1`, `q = 9 + 1 = 10` - **Loop Ends:** `x = 0` Thus, the function call `go(4)` returns `10`.
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