Write a program that reads in an integer from the keyboard and displays its value

doubled, using two functions that you write. The reading function should be int and the

displaying function should be void.

2. How does the use of inline speed up the execution of a program? What is the disadvantage

of using inline?

3. What is the output produced by the following program? Explain.

#include

using namespace std;

void testfunc(int x, int y = 10) {

cout }

int main () {

testfunc(3);

return 0;

}

4. What is the output of the following program? Explain.

#include

using namespace std;

void f(int i, int &j) {

i = 5;

j = j + i;

cout cout }

int main () {

int i = 15;

int j = 30;

f(i, j);

cout cout }

5. Write a program that reads in two integers from the keyboard and displays their sum. The

reading function should read in both integers at the same time. Both the reading and

displaying functions should be separate void functions.

6. What is the output of the following program? Explain.

#include

using namespace std;

float someNum = 3.0;

int main () {

int someNum = 2;

cout cout return 0;

}

7. When two or more functions have the same name, how does the compiler determine which one

to use for a particular function call?

8. Write a void function called swap that takes two integer parameters and swaps their

contents. Write another swap function that takes two double arguments. Write a short main

function that calls both swap functions and demonstrates that the contents have been

swapped. Cout statements should only appear in function main.

9. Why do we have both debug and release builds?

10. What is the difference between step over, and step into?

11. Find and describe the errors in the following program. Use the debugger.

//this program computes how much money will

//accumulate after so many years of investing

#include

using namespace std;

double Balance = 0.0;

double Interest;

double YearlyCont;

int NumYears;

//this function computes one year of investment

double newBalance(double balance);

int main () {

cout cin >> YearlyCont;

cout cin >> Interest;

cout cin >> NumYears;

for(int i = 1; i Balance = newBalance(Balance);

cout return 0;

}

double newBalance(double balance) {

//add in this year’s deposit

balance = balance + YearlyCont;

//add in this year’s interest

balance = (Interest + 1.0) * Balance;

return balance;

}

 

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