C++ Program Examples. This question is once asked in “Nepal Programmers Community”, Programmers Official Community. I have solved the problems and provided the answers here with code. I hope, this will help you to understand how to solve these problems in C++ using functions.
Program Code for Question 1.
#include<iostream>
#include<conio.h>
#define B 200;
#define F 50;
#define P 500;
#define S 150;
using namespace std;
void displaymenu();
void takecustomerdata();
int main()
{
displaymenu();
takecustomerdata();
getch();
return 0;
}
void displaymenu()
{
cout<<“Menu”<<endl;
cout<<“B-Burger”<<endl;
cout<<“F-French Fries”<<endl;
cout<<“P-Pizza”<<endl;
cout<<“S-Sandwich”<<endl;
}
void takecustomerdata()
{
int quantity;
char type;
double charge;
cout<<“Enter Food Type and Quantity ? Food Type [B or F or P or S]”<<endl;
cin>>type>>quantity;
cout<<“You ordered “<<quantity<<” “<<type<<endl;
switch(type)
{
case ‘B’:
charge = quantity * 200;
cout<<“Total Charge: “<<charge<<endl;
break;
case ‘F’:
charge = quantity * 50;
cout<<“Total Charge: “<<charge<<endl;
break;
case ‘P’:
charge = quantity * 500;
cout<<“Total Charge: “<<charge<<endl;
break;
case ‘S’:
charge = quantity * 500;
cout<<“Total Charge: “<<charge<<endl;
break;
default:
cout<<“You entered invalid type!”;
}
}
Program Code for Question 2.
/* Program to make a simple calculator to Add, Subtract, Multiply and Divide using functions*/
#include<iostream>
#include<conio.h>
using namespace std;
void simplecalculator();
int main()
{
simplecalculator();
}
void simplecalculator()
{
char c;
int a,b,add,sub,mul,div;
cout<<“Enter Operation [+,-,*,/] \n”;
cin>>c;
cout<<“Enter any two numbers”<<endl;
cin>>a>>b;
switch(c)
{
case ‘+’:
add = a + b;
cout<<“Addition of two number is “<<add<<endl;
break;
case ‘-‘:
sub = a – b;
cout<<“Subtraction of two number is “<<sub<<endl;
break;
case ‘*’:
mul = a * b;
cout<<“Multiplication of two number is “<<mul<<endl;
break;
case ‘/’:
div = a / b;
cout<<“Division of two number is “<<div<<endl;
break;
default:
cout<<“Invalid Input”<<endl;
}
}
I have used Dev C++ Compiler while solving these programs.
In above program, I have just used Switch Case Statement, Functions, and Basic input/output functions of c++ programming. I think you have understood the concepts very well.
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