#include<iostream>
#include<math.h>
#include "geometry.h"
using namespace std;

int main()
{
double apple=VolSphere(3.0/2);//storing the volume of single apple in apple by passing the radius of apple
double pizza=VolCylinder(12.0/2,0.5);//storing the volume of single pizza in pizza by passing radius and height
double donut=VolDonut(1.5,0.5);//storing the volume of single donut in donut by passing the R and r values
double icecone=VolCone(2.0/2,5)+VolSphere(2.5/2);
/*as icecream cone has cone and sphere we are calling both function with given value and adding them and storing
in icecone*/
int napple,npizza,ndonut,nicecone;//this refer to number of apples,pizzas,donuts and icecream cones respectively
double volapple,volpizza,voldonut,volicecone;//this will refer to volume of each particular food

cout<<"Enter the number of apples that you are going to eat : ";
cin>>napple;//getting the input of number of apples
cout<<endl<<"Enter the number of pizzas that you are going to eat : ";
cin>>npizza;//getting the input of number of pizzas
cout<<endl<<"Enter the number of donuts that you are going to eat : ";
cin>>ndonut;//getting the input of number of donuts
cout<<endl<<"Enter the number of icecream cones that you are going to eat : ";
cin>>nicecone;//getting the input of number of icecream cones

volapple=apple*napple;//calculating total volume of apples eaten
volpizza=pizza*npizza;//calculating total volume of pizzas eaten
voldonut=donut*ndonut;//calculating total volume of donuts eaten
volicecone=icecone*nicecone;//calculating total volume of icecream cones eaten
double total=volapple+volpizza+voldonut+volicecone;//calculating total volume of food eaten

cout<<endl<<"Total volume of apples : "<<volapple;
cout<<endl<<"Total volume of pizzas : "<<volpizza;
cout<<endl<<"Total volume of donuts : "<<voldonut;
cout<<endl<<"Total volume of icecream cones : "<<volicecone;
cout<<endl<<"Total volume of food : "<<total;
//printing the output
return 0;
}

C++ Online Compiler

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Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#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
}