1. Given the program below, #include using namespace std; int fun(int *k){ *k += 4; return 3 (*k) - 1; } int main() { int i = 10, j = 10, sum1, sum2; = (i/2) + fun(&i); sum2 = fun ( &j) + (j/2); cout << sum1 << endl; suml cout << sum2 << endl; return 0; } a) Predict the values of sum1 and sum2 if the operands in the expressions for suml and sum2 are evaluated left to right. b) Predict the values of sum1 and sum2 if the operands in the same expressions are evaluated right to left. c) Predict the values of suml and sum2 if functions are evaluated first. d) Compile with g++ and run the program on pluto or your favorite c++ environment, what are the values for suml and sum2? 2. Given the program below, #include using namespace std; int a = 5; int fun1( ) { a = 17; return 3; } int fun(int* i){ *i += 5; return 4; } int main() { a = a + fun1(); cout << "a = " << a << endl; int x = 3; x = x + fun(&x); cout << "x = " << x << endl; return 0; } a) What would be the output if you compile with g++ and run the program on pluto? b) Based on 3 and 4 a), what conclusion can you make on operands evaluation order in C++, left-to-right or right-to left?
1. Given the program below, #include using namespace std; int fun(int *k){ *k += 4; return 3 (*k) - 1; } int main() { int i = 10, j = 10, sum1, sum2; = (i/2) + fun(&i); sum2 = fun ( &j) + (j/2); cout << sum1 << endl; suml cout << sum2 << endl; return 0; } a) Predict the values of sum1 and sum2 if the operands in the expressions for suml and sum2 are evaluated left to right. b) Predict the values of sum1 and sum2 if the operands in the same expressions are evaluated right to left. c) Predict the values of suml and sum2 if functions are evaluated first. d) Compile with g++ and run the program on pluto or your favorite c++ environment, what are the values for suml and sum2? 2. Given the program below, #include using namespace std; int a = 5; int fun1( ) { a = 17; return 3; } int fun(int* i){ *i += 5; return 4; } int main() { a = a + fun1(); cout << "a = " << a << endl; int x = 3; x = x + fun(&x); cout << "x = " << x << endl; return 0; } a) What would be the output if you compile with g++ and run the program on pluto? b) Based on 3 and 4 a), what conclusion can you make on operands evaluation order in C++, left-to-right or right-to left?
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:**1. Given the program below,**
```cpp
#include <iostream>
using namespace std;
int fun(int *k) {
*k += 4;
return 3 * (*k) - 1;
}
int main() {
int i = 10, j = 10, sum1, sum2;
sum1 = (i/2) + fun(&i);
sum2 = fun(&j) + (j/2);
cout << sum1 << endl;
cout << sum2 << endl;
return 0;
}
```
**a) Predict the values of sum1 and sum2 if the operands in the expressions for sum1 and sum2 are evaluated left to right.**
**b) Predict the values of sum1 and sum2 if the operands in the same expressions are evaluated right to left.**
**c) Predict the values of sum1 and sum2 if functions are evaluated first.**
**d) Compile with g++ and run the program on pluto or your favorite C++ environment, what are the values for sum1 and sum2?**
**2. Given the program below,**
```cpp
#include <iostream>
using namespace std;
int a = 5;
int fun1() {
a = 17;
return 3;
}
int fun(int* i) {
*i += 5;
return 4;
}
int main() {
a = a + fun1();
cout << "a = " << a << endl;
int x = 3;
x = x + fun(&x);
cout << "x = " << x << endl;
return 0;
}
```
**a) What would be the output if you compile with g++ and run the program on pluto?**
**b) Based on 3 and 4 a), what conclusion can you make on operands evaluation order in C++, left-to-right or right-to-left?**
---
### Explanation:
#### Program 1:
1. **`fun(int *k)` Function:**
- Adds 4 to the value pointed to by `k`.
- Returns `3 * (*k) - 1`.
2. **`main` Function:**
- Initializes `i` and `j` to 10.
- Calculates `sum1` and `sum2` with expressions using `fun`.
####
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