Translate the following C++ program into assembly language:
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
PEP/9
Translate the following C++ program into assembly language:
#include <iostream>
using namespace std;
int main() {
char letter;
int countA = 0,
countB = 0,
countC = 0;
cin >> letter;
do {
switch (letter) {
case 'A' : countA++; break;
case 'B' : countB++; break;
case 'C' : countC++; break;
}
cin >> letter;
} while (letter != 'X');
cout << "Number of A's " << countA << endl
<< "Number of B's " << countB << endl
<< "Number of C's " << countC << endl;
return 0;
}
Use local variables (except for messages, of course) and the branch indexed for the switch statement.

Transcribed Image Text:The image contains a task to translate a C++ program into assembly language. Below is the C++ code provided:
```cpp
#include <iostream>
using namespace std;
int main() {
char letter;
int countA = 0, countB = 0, countC = 0;
cin >> letter;
do {
switch (letter) {
case 'A' : countA++; break;
case 'B' : countB++; break;
case 'C' : countC++; break;
}
cin >> letter;
} while (letter != 'X');
cout << "Number of A's " << countA << endl
<< "Number of B's " << countB << endl
<< "Number of C's " << countC << endl;
return 0;
}
```
### Program Explanation:
1. **Header Inclusion and Namespace**:
- The program includes the `<iostream>` header to facilitate input and output operations.
- The `using namespace std;` directive is used to avoid needing to prefix standard library names with `std::`.
2. **Variables**:
- `char letter;` is used to store user input.
- Three integer variables, `countA`, `countB`, and `countC`, are initialized to zero to keep track of the number of times the letters 'A', 'B', and 'C' are entered.
3. **Loop and Switch Statement**:
- A `do-while` loop reads characters from input until the character 'X' is entered.
- The `switch` statement checks the input letter and increments the respective counter (`countA`, `countB`, or `countC`) based on whether the input is 'A', 'B', or 'C'.
4. **Output**:
- After exiting the loop, the program outputs the number of times 'A', 'B', and 'C' have been entered.
5. **Return Statement**:
- The program returns 0, indicating successful execution.
### Instructions:
- Translate this C++ program into assembly language, focusing on using local variables and indexed branching for the switch statement logic.
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