//Tom & Jerry's Lawn Service
//Student name: Tarun Balaji 

//Defining the namespace and library

#include <iostream>
#include <iomanip>
using namespace std;


// starting code
int main() 
{
    double mowing_price = 34.95; //fixed mowing price is set as double
    double fertz_price = 39.95; //fixed fertilizing price is set as double
    double tree_price = 54.95; //fixed tree price is set as double
    
    int LawnArea; //set lawn area to be an integer
    int fertz_app; //set number 
    int tree_number;//set number of trees to be an integer
    
    double mowing_cost;
    double fertz_cost;
    double tree_cost;
    double Total_cost;//set cost values to be doubles
    
    cout << "Welcome to Tom & Jerry's Lawn Service!"; //accessory
    
    cout << "Enter the area of your lawn (in sq. yards): ";
    cin >> LawnArea;  //storing lawn area from input
    
    //calculate mowing cost. use ceil to round up to the nearest whole number
    mowing_cost = ceil((LawnArea - 1)/4000.0)*mowing_price;
    
    
    cout << "Enter the number of fertilizing applications: ";
    cin >> fertz_app; //storing no. of fertilizing application from input
    
    //calculate cost=number*rate
    fertz_cost = fertz_app * fertz_price;
    
    
    cout << "Enter the number of trees you want to plant: ";
    cin >> tree_number; //storing no. of trees from input
    
    
    //calculate cost=number*rate
    tree_cost = tree_number * tree_price;
    
    //calculate total cost through addition and store as Total_cost
    Total_cost = mowing_cost + fertz_cost + tree_cost;
    
    cout << fixed << setprecision(2); //set the output format of the following numbers to two decimal places
    
    //display all values using cout
    cout << "Cost of mowing: $" << mowing_cost << endl; 
    cout << "Cost of fertilizing applications: $" << fertz_cost << endl;
    cout << "Cost of planting trees: $" << tree_cost << endl; 
    
    cout << "Total cost: $" << Total_cost << endl;
    
    //code returns to starting point
    return 0;
}

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#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}