Answered: Write a program that prompts the user…

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

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C++

Write a program that prompts the user to enter five test scores and then prints the average test score. Indicate the average test score by printing it to the terminal using the following format:

Your average test score is: X

(Assume that the test scores are decimal numbers.)

!!! 3/
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Instructions
Write a program that prompts the user
to enter five test scores and then prints
the average test score. Indicate the
average test score by printing it to the
terminal using the following format:
Your average test score is: X
(Assume that the test scores are
decimal numbers.)
Grading
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5 int
6 {
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3 us:
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do
CO
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COU
cir
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cout
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cout<

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Didn't necessarily come out correct when i ran it

### C++ Programming Code Overview

This image displays a screenshot of a C++ program alongside compilation errors found in the terminal.

#### Source Code (main.cpp)

```cpp
#include <iostream>

using namespace std;

int main()
{
float sum=0; // Initialize the decimal sum to 0
float number; // Declare number variable
float average; // Declare the average variable

cout<<"Enter five test scores:"; // Asking user to input five test scores

for(int i=0; i<5; ++i) // Iterate loop 5 times
cin>>number; // Input a number
sum+=number; // Getting sum of all numbers

average=sum/5; // Calculating the average of 5
cout<<"Your average test score is: " << average; // Print the average of 5 numbers
}
```

#### Compilation Errors and Warnings

1. **Error: `sum` was not declared in this scope**
- The terminal shows an error indicating that `sum` was not declared in the scope where it was used. This is a confusion as `sum` is declared at the beginning of `main()`.

2. **Warning: Unused variable `i_0`**
- A warning indicates an unused variable `i_0`, which is misleading as it might be mistaken for a typo. The actual loop syntax `for(int i=0; i<5; ++i)` should be correct.

3. **Error in directory**
- The message `bash: ./a.out: No such file or directory` suggests that an executable file is expected but not found. This might be due to compilation errors preventing the creation of an executable.

### Explanation and Solutions

- **Loop and Syntax Correction**:
Ensure that the loop is properly formatted with opening and closing braces `{}` around the loop body to include both `cin>>number;` and `sum+=number;`.

- **Compiling and Running the Program**:
Fix the errors and ensure successful compilation with a command like `g++ main.cpp -o main`. After compilation, run the program using `./main`.

This explanation provides insights into common syntax errors and issues faced during compilation, helpful for beginners learning C++.

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