```cppdata[i] = data[i-1];}data[current_index] = entry;used++;}template void sequence::attach(const value_type& entry){ if(used >= capacity) { resize((1.5*capacity) + 1 ); } if(current_index >= used) { current_index = 0; advance();``` ### ExplanationThis code snippet appears to be part of a C++ class implementation, likely related to a data structure that handles sequences of items. Below is a breakdown of the key elements:#### Functionality:- **Data Manipulation**: The snippet shows manipulation of a `data` array or similar container where elements are being shifted (`data[i] = data[i-1]`) and a new entry is being inserted (`data[current_index] = entry;`).- **Usage Tracking**: After inserting the entry, the `used` counter is incremented, indicating the number of items present in the sequence.- **Resizing Logic**: The `attach` function checks if the storage capacity is reached and expands it by 1.5 times plus one if necessary. This ensures that there is always capacity for new entries without continually reallocating memory.- **Index Handling**: If `current_index` reaches or exceeds `used`, which might occur when trying to iterate beyond the last element, it is reset to zero, and an `advance()` method is called, possibly to move to the next position.This code demonstrates general techniques for dynamic array management and safe insertion operations within a collection framework in C++. ### Understanding Common C++ Compilation ErrorsWhen programming in C++, you might encounter compilation errors that can be challenging to decipher. Below is an example of a set of errors that may appear during the compilation process along with explanations to help you understand and resolve them.#### Error List1. **Line 17** - `[Error] 'data' was not declared in this scope` - **Explanation**: The variable `data` is being used without being declared in the current scope. Ensure that `data` is declared before it is used.2. **Line 6** - `[Error] 'used' was not declared in this scope` - **Explanation**: Similar to the 'data' error, the `used` variable or function is being used without prior declaration. Verify the declaration of `used` in the appropriate scope.3. **Line 6 (Repeated)** - `[Error] 'used' was not declared in this scope` - **Explanation**: This error may repeat if `used` is called multiple times where it is not declared.4. **Global Scope Errors** - **Message**: Various declarations are missing at a global level. Critical declarations like `sequence` and `value_type` have not been declared, potentially causing multiple compilation issues.5. **Within the Function `void CS3358_FA2022::attach(const int&)`** - **Error 1**: `[Error] 'capacity' was not declared in this scope` - **Error 2**: `[Error] there are no arguments to 'resize' that depend on a template parameter, so a declaration of 'resize' must be available [-fpermissive]` - **Explanation**: - `capacity` is being used without a proper declaration. - The `resize` function, likely used with a template, is missing a necessary declaration. Ensure that the template parameters are correctly defined and that the `resize` function is accessible with the correct arguments.6. **Line 17 (Repeated)** - `[Error] no matching function for call to 'advance()'` - **Explanation**: The `advance()` function is called with arguments that do not match any available overloads. Check the parameters being passed to ensure they align with any existing `advance()` definitions.#### General Tips for Resolving Compilation Errors:- **Declare Variables**: Always declare variables before

C programming which refers to the object oriented programming languages. C programming language…

117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 0-0 } } data[i] = data[i-1]; data[current_index] = entry; used++; template void sequence::attach(const value_type& entry) if(used >= capacity) resize((1.5*capacity) + 1); { } if (current_index >= used) { current_index = 0; advance();

117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 0-0 } } data[i] = data[i-1]; data[current_index] = entry; used++; template void sequence::attach(const value_type& entry) if(used >= capacity) resize((1.5*capacity) + 1); { } if (current_index >= used) { current_index = 0; advance();

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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Subject: C Programming
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