Answer the following questions regarding execution of loops. Assume that the code below is executed on an MSP430 (ie, an int has a size of two bytes). a. In the following code segment, how many times does the loop iterate? What are the values of kk, mm, and inVal at the end of the first and last loops? (You can specify the values in either hex or decimal, whichever you prefer.) unsigned int inVal, out, kk = 0x0001, mm = Ox1000; char count 1; // ... while (kk != 0) { inVal (mm + kk) / kk; mm /= 2; kk = kk << 1; } // ...
Answer the following questions regarding execution of loops. Assume that the code below is executed on an MSP430 (ie, an int has a size of two bytes). a. In the following code segment, how many times does the loop iterate? What are the values of kk, mm, and inVal at the end of the first and last loops? (You can specify the values in either hex or decimal, whichever you prefer.) unsigned int inVal, out, kk = 0x0001, mm = Ox1000; char count 1; // ... while (kk != 0) { inVal (mm + kk) / kk; mm /= 2; kk = kk << 1; } // ...
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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Transcribed Image Text:### Execution of Loops and Variable Values in MSP430 Code Segment
**Problem Statement:**
Answer the following questions regarding the execution of loops. Assume that the code below is executed on an MSP430 (i.e., an `int` has a size of two bytes).
#### Question:
a. In the following code segment, how many times does the loop iterate? What are the values of `kk`, `mm`, and `inVal` at the end of the first and last loops? (You can specify the values in either hex or decimal, whichever you prefer.)
#### Code Segment:
```c
unsigned int inVal, out, kk = 0x0001, mm = 0x1000;
char count = 1;
// ...
while(kk != 0)
{
inVal = (mm + kk) / kk;
// ...
mm /= 2;
kk = kk << 1;
}
// ...
```
### Explanation:
#### Loop Analysis:
- **Initial Values:**
- `kk = 0x0001` (in hexadecimal), which is 1 in decimal.
- `mm = 0x1000` (in hexadecimal), which is 4096 in decimal.
- `inVal` is an uninitialized unsigned integer.
- `count = 1` (in decimal).
- **Condition:**
- The while loop executes as long as `kk` is not equal to 0.
- **Body of Loop:**
1. Calculate `inVal` as `(mm + kk) / kk`.
2. Divide `mm` by 2.
3. Left shift `kk` by 1 (equivalent to multiplying `kk` by 2).
#### Step-by-Step Iteration:
1. **First Iteration:**
- `kk = 1`
- `mm = 4096`
- `inVal = (4096 + 1) / 1 = 4097`
- `mm = 4096 / 2 = 2048`
- `kk = 1 << 1 = 2`
2. **Second Iteration:**
- `kk = 2`
- `mm = 2048`
- `inVal = (2048 + 2) / 2 = 1025`
- `mm = 2048 /
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