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5. Draw flow diagram for the following program fragment: do if(E2) S1 else S2 while(E1)

5. Draw flow diagram for the following program fragment: do if(E2) S1 else S2 while(E1)

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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Certainly! Here is a transcription and explanation suitable for an educational website: --- **Understanding Flow Diagrams in Programming** **Problem Statement:** 5. Draw a flow diagram for the following program fragment: ``` do if(E2) S1 else S2 while(E1) ``` **Explanation:** This code snippet represents a loop structure where the `do-while` loop is combined with an `if-else` conditional. - **do-while Loop:** This loop will execute the code block once before checking the loop condition specified by `(E1)`. It continues to repeat the block as long as the condition `(E1)` is true. - **if-else Conditional:** Inside the loop, there is an `if-else` statement. It evaluates condition `(E2)`: - If `(E2)` is true, it executes statement `S1`. - Otherwise, it executes statement `S2`. To visualize this logic, you would typically create a flow diagram with these components: 1. **Start Node:** Indicate the beginning of the loop. 2. **Decision Node (E2):** A diamond shape where the condition `(E2)` is evaluated. - Connect to `S1` if true. - Connect to `S2` if false. 3. **Process Nodes:** - `S1`: A rectangular box indicating the execution of statement `S1`. - `S2`: A rectangular box indicating the execution of statement `S2`. 4. **While Evaluation (E1):** A decision node after the `if-else` structure, evaluating `(E1)`. - Loop back to the start if true. - Proceed to the end if false. 5. **End Node:** Indicate the termination of the loop. This flowchart helps in visualizing the sequence of operations and control decisions made by the `do-while` loop with the embedded `if-else` conditions. --- This explanation assists students in understanding how to represent program logic visually through flow diagrams, which is an essential skill in programming and algorithm development.
Transcribed Image Text:Certainly! Here is a transcription and explanation suitable for an educational website: --- **Understanding Flow Diagrams in Programming** **Problem Statement:** 5. Draw a flow diagram for the following program fragment: ``` do if(E2) S1 else S2 while(E1) ``` **Explanation:** This code snippet represents a loop structure where the `do-while` loop is combined with an `if-else` conditional. - **do-while Loop:** This loop will execute the code block once before checking the loop condition specified by `(E1)`. It continues to repeat the block as long as the condition `(E1)` is true. - **if-else Conditional:** Inside the loop, there is an `if-else` statement. It evaluates condition `(E2)`: - If `(E2)` is true, it executes statement `S1`. - Otherwise, it executes statement `S2`. To visualize this logic, you would typically create a flow diagram with these components: 1. **Start Node:** Indicate the beginning of the loop. 2. **Decision Node (E2):** A diamond shape where the condition `(E2)` is evaluated. - Connect to `S1` if true. - Connect to `S2` if false. 3. **Process Nodes:** - `S1`: A rectangular box indicating the execution of statement `S1`. - `S2`: A rectangular box indicating the execution of statement `S2`. 4. **While Evaluation (E1):** A decision node after the `if-else` structure, evaluating `(E1)`. - Loop back to the start if true. - Proceed to the end if false. 5. **End Node:** Indicate the termination of the loop. This flowchart helps in visualizing the sequence of operations and control decisions made by the `do-while` loop with the embedded `if-else` conditions. --- This explanation assists students in understanding how to represent program logic visually through flow diagrams, which is an essential skill in programming and algorithm development.
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