CPPForSchool.com: User Defined Function Set 1: Assignment 9

9. Give the output of the following program.

 
#include <iostream>
using namespace std;

int global = 10;

void func(int &x, int y)
{
    x = x - y;
    y = x * 10;
    cout << x << ", " << y << '\n';
}

int main()
{
    int global = 7;
    func (::global, global);
    cout << global << ", " << ::global << '\n';
    
    func(global, ::global);
    cout << global << ", " << ::global << '\n';
    
    return 0;
} 


-------------------------------------------------






3, 100


7, 30


4, 40


4, 3
















































Comments











Post a Comment



















Popular posts from this blog









CPPForSchool.com: Variable, Operator & Expression Set 1: Assignment 9














Image







9.        Write a program to check whether    the given number is positive or negative (using ? : ternary operator )   This assignment had my computer science senses tingling, in a very bad way.  For this particular assignment, I had to code a program that utilizes a ternary operator for determining if a number is positive or negative.  In concept this should be rather simple, but reading it hasn't been too easy.  From what I understood, ternary operators function much like a shorthand if/else statement.  Nevertheless, below is the source code and output.      Although there everything outputted as expected, there is a minor issue.  If the user decides to input a zero, regardless of the instruction, it will output incorrect information.   Example 1: "23 is a positive number."  <--Correct!        Example 2: "-123 is a negative number."  <--Correct!        Example 3: "0 is a negative number." <--Wrong!          Once again, I would like to point ...








Read more










CPPForSchool.com: Array - Single Dimension Set 1 Assignment 6














Image







6.        P is one-dimensional array of integers. Write a C++ function to  efficiently search for a data VAL from P. If VAL is present in the array  then the function should return value 1 and 0 otherwise.   For this assignment, I was not able to decipher what VAL was supposed to represent.  Presumably, it stood for value, but I was not 100% sure so I went ahead and reviewed the sample code.  With that said, I coded this assignment using functions once again.  Also, using bool was quite interesting.  I was unaware of how flexible bool can be utilized.  I have learned a great deal with this assignment.  Nevertheless, below is my source code along with the sample code for comparison.                             








Read more










CPPForSchool.com: Variable, Operator & Expression Set 1: Assignment  8














Image







8.        Write a program to calculate area of circle.   Once again, math has reared its focus on an assignment.  Luckily, with the power of search engines, I was able to rediscover the equations for calculating the area of a circle.  However, there are some requirements.  In order to calculate the area of a circle, the user will need to provide one of the following: radius, diameter, or circumference.   Also, here is a quick rundown of the variables.   A = Area  π = pi  r = radius  D = diameter  C = circumference   According to MathIsFun , the area of a circle can be calculated using one of the following formulas.  **Fun fact, in order to type the pi symbol "π", hold down ALT + 2, 2, 7. -- WikiHow **  **For the exponent of 2, hold down ALT + 2, 5, 3. -- AZCentral **    A = π r²                     π  (Pi) times the Radius squared        A = ( π / 4 ) * D²      when you know the Diameter A = C² / 4...








Read more