### Program Analysis**Task: Determine the output of the following Python program when the `main()` function is called.**### Code:```pythondef foo(a, b): print(a - b)def main(): a = 5 b = 2 foo(b, a)main()```### Explanation:1. **Function Definition `foo(a, b)`:** - This function takes two parameters, `a` and `b`, and prints the result of `a - b`.2. **Function `main()`:** - Within this function, two variables are defined: - `a` is assigned the value `5`. - `b` is assigned the value `2`. - The function `foo(b, a)` is called with arguments reversed: `foo(2, 5)`.3. **Function Call `foo(2, 5)`:** - Inside the `foo` function, `a` becomes `2` and `b` becomes `5`. - The calculation `a - b` is performed: `2 - 5`, which equals `-3`.### Output:The program prints `-3`.### Answer Choices:- O -7- O 10- O -3- O 3The correct answer is: **O -3**

Answered: What will the foll def foo(a, b):…

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What will the foll def foo(a, b): print(a-b) def main(): a=5 b=2 foo(b.a)

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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Question

### Program Analysis

**Task: Determine the output of the following Python program when the `main()` function is called.**

### Code:

```python
def foo(a, b):
print(a - b)

def main():
a = 5
b = 2
foo(b, a)

main()
```

### Explanation:

1. **Function Definition `foo(a, b)`:**
- This function takes two parameters, `a` and `b`, and prints the result of `a - b`.

2. **Function `main()`:**
- Within this function, two variables are defined:
- `a` is assigned the value `5`.
- `b` is assigned the value `2`.
- The function `foo(b, a)` is called with arguments reversed: `foo(2, 5)`.

3. **Function Call `foo(2, 5)`:**
- Inside the `foo` function, `a` becomes `2` and `b` becomes `5`.
- The calculation `a - b` is performed: `2 - 5`, which equals `-3`.

### Output:

The program prints `-3`.

### Answer Choices:

- O -7
- O 10
- O -3
- O 3

The correct answer is: **O -3**

Expert Solution

Step 1 Explanation

Dear Student,

When foo function is called with values b=2 and a = 5, b-a will be calculated ie 2-5 = -3.

And print function will print this value.

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