6 in 1 Program in C++

In this program we will learn how to combine 6 C++ program in a single C++ program and run them as per user desire.
The code is given below


//Code Starts

#include <iostream>
#include<math.h>
#include<conio.h>

using namespace std;

int main()

{
int a,b,num,dig,sum,sub,mul;

float rem,div;

char op;

cout<<" Enter 1 to Perform Methamatical Operation "<<endl;

cout<<" Enter 2 to search a prime number in given range "<<endl;

cout<<" Enter 3 to Perform Binary Seartch in Array"<<endl;

cout<<" Enter 4 for Starric Program"<<endl;

cout<<" Enter 5 for Factorial"<<endl;

cout<<" Enter 6 to Check Even or odd Number"<<endl;

abc: cin>>num;

cout<<"------- Program Number : "<<num<<"-----------------"<<endl;

if(num==1)

{

cout<<"Enter  '+' for Sum, or '-' for Subtraction, or '/' for Division, or '*' for Multiplication, or '%'for Remainder  "<<endl;

cin>>op;


switch(op)
{


case'+':

cout<<"Enter 1st Number : " ;

cin>>a;

cout<<"Enter 2nd Number : " ;

cin>>b;

sum=a+b;
cout<<"Sum =  "<<sum;

break;

case'-':

cout<<"Enter 1st Number : " ;

cin>>a;

cout<<"Enter 2nd Number : " ;

cin>>b;

sub=a-b;
cout<<"Subtraction =  "<<sub;

break; 

case'*':

   cout<<"Enter 1st Number : " ;

cin>>a;

cout<<"Enter 2nd Number : " ;

cin>>b;

mul=a*b;

cout<<"Multiplication =  "<<mul;

break;
case'/':

cout<<"Enter 1st Number : " ;

cin>>a;

cout<<"Enter 2nd Number : " ;

cin>>b;

div=a/b;
cout<<"Divide =  "<<div;

break;

case'%':

cout<<"Enter 1st Number : " ;

cin>>a;

cout<<"Enter 2nd Number : " ;

cin>>b;

rem=a%b;
cout<<"Remainder =  "<<rem;

break;

}
}

else if(num==2)

{
int c,d;

int a=0,b=0;

cout<<"ENTER STARTING RANGE TO CHECK PRIME NUMBER"<<endl;
cin>>c;

cout<<"ENTER ENDING RANGE TO CHECK PRIME NUMBER"<<endl;

cin>>d;

for(int i=c;i<=d;i++)
{
for(int j=2;j<=sqrt(i);j++)
{
if(i%j==0)

a++;
}

if(a==0&&i!=0)
{
b++;

cout<<"PRIME Number =>   "<<i<<endl;

a=0;
}
a=0;
}

cout<<"RANGE OF PRIME NUMBER IN BETWEEEN  "<<c<<" TO "<<d<<" = "<<b;
}
else if(num==3)
{
int a[100],n,i,beg,end,mid,item;

cout<<"\n------------ BINARY SEARCH ------------ \n\n";
cout<<"Enter No. of Elements= ";
cin>>n;

cout<<"\nEnter Elements in Sorted Order=\n";
for(i=1;i<=n;i++)
{
cin>>a[i];
}

cout<<"\nEnter Item you want to Search= ";
cin>>item;

beg=1;
end=n;

mid=(beg+end)/2;                       // Find Mid Location of Array

while(beg<=end && a[mid]!=item)      // Compare Item and Value of Mid
{
if(a[mid]<item)
beg=mid+1;
else
end=mid-1;

mid=(beg+end)/2;
}

if(a[mid]==item)
{
cout<<"\nData is Found at Location : "<<mid;
}
else
{
cout<<"Data is Not Found";
}
}

else if(num==4)
{
int a;

cout<<"Enter anY number"<<endl;

cin>>a;

for(int i=1;i<=a;i++)

{
for(int j=1;j<=i;j++)

{
cout<<"*";

}

cout<<endl;
}

}

else if(num==5)

{
    int num,factorial=1;

    cout<<" Enter Number To Find Its Factorial:  ";

    cin>>num;

    for(int a=1;a<=num;a++)

    {

        factorial=factorial*a;

    }

cout<<"Factorial of Given Number is ="<<factorial<<endl;

}

else if(num==6)

{
    int min,max;
   
 {
    cout << "Enter the minimum range: "<<endl;
    cin >> min;

   cout << "Enter the maximum range: "<<endl;
    cin >> max;

    cout << "Odd numbers in given range are: "<<endl;
    for(int num=min;num <= max;num++)

         if(num % 2 !=0)
             cout << num<< " "<<endl;

    cout<<"Even numbers in given range are: "<<endl;
    for(int even=min;even <= max;even++)

         if(even % 2 ==0)
             cout << even << " "<<endl;
          
  }
}

else
{
cout<<"Invalid Entry enter again with number 1-6 only : "<<endl;
goto abc;
}

getch();

}

//Code Ends

OUTPUT: