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//group 4 vlsm calc version 3.2
#include <iostream>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;
int main()
{
int netnum,oct1,oct2,oct3,oct4,mask;
string oct1s, oct2s, oct3s, oct4s;
//get user input
//example 192.168.1.0/24
cout << "\t\tWelcome to the VLSM pragram by Group4\n";
cout << "Enter Major Network IP Address (example 192.168.1.0/24)\n:";
getline(cin, oct1s, '.');
getline(cin, oct2s, '.');
getline(cin, oct3s, '.');
getline(cin, oct4s, '/');
cin >> mask;
cin.ignore( numeric_limits<streamsize>::max(), '\n' );
//convert strint to int so that you can use it as a number
oct1 = atoi(oct1s.c_str());
oct2 = atoi(oct2s.c_str());
oct3 = atoi(oct3s.c_str());
oct4 = atoi(oct4s.c_str());
//get the number of nextworks
cout<<"\nEnter Number of Subnets : ";
cin>> netnum;
//Create the array with the size the user input
int *hostnum = new int[netnum];
//array for avalible host
int *allocatedSize = new int[netnum];
//array for subnetmask
int *subnetmask = new int[netnum];
//array for bitvalue2
int *bitvalue2 = new int[netnum];
//array for bitvalue3
int *bitvalue3 = new int[netnum];
//array for bitvalue4
int *bitvalue4 = new int[netnum];
//array for out octet 4
int *totalOct4 = new int [netnum];
//array for out octet 3
int *totalOct3 = new int[netnum];
//array for out octet 2
int *totalOct2 = new int[netnum];
//for loop array set to 0
for(int i=0;i<netnum;i++)
{
bitvalue2[i]=0;
bitvalue3[i]=0;
bitvalue4[i]=0;
totalOct2[i]=0;
totalOct3[i]=0;
totalOct4[i]=0;
}
//put the numbers of host in an array
cout << "Enter the number of host for each Network from greatest to least" << endl;
for(int i=0; i<netnum; i++)
{
double power=0.0;
cout << "Subnet: "<< 1+i <<" : ";
cin >> hostnum[i];
if ((hostnum[i] > 0) && (hostnum[i] <= 126))
{
//get the number we have to raise 2 to for a class C.
while (allocatedSize[i] < hostnum[i])
{
allocatedSize[i]=pow(2.0,power)-2;
bitvalue4[i]=pow(2.0,power);
subnetmask[i]=32-power;
power++;
}
}
else if ((hostnum[i] > 126) && (hostnum[i] <= 65534))
{
//get the number we have to raise 2 to for a class B.
while (allocatedSize[i] < hostnum[i])
{
allocatedSize[i]=pow(2.0,power)-2;
bitvalue3[i]=(pow(2.0,power)/256);
subnetmask[i]=32-power;
power++;
}
}
else if ((hostnum[i] > 65534) && (hostnum[i] < 16777214))
{
//get the number we have to raise 2 to for a class A.
while (allocatedSize[i] < hostnum[i])
{
allocatedSize[i]=pow(2.0,power)-2;
bitvalue2[i]=pow(2.0,power);
subnetmask[i]=32-power;
power++;
}
}
else
{
cout << "\nRequested host number is way too high!!! What's wrong with you?" << endl;
}
}
//definition
double totalip2=0.0;
double totalip3=0.0;
double totalip4=0.0;
int lastip;
int fistip;
//Header
cout << "\n\tMajor Network IP Address: " << oct1 << "." << oct2 << "." <<
oct3 << "." << oct4 << "/" << mask << endl;
cout << "\n# Host Allocated \tNetwork Adrress \tAssignable Range" << endl;
//this for loop executes for every subnet
for(int i=0;i<netnum;i++)
{
//this adds together the ip per octet
totalip2 += bitvalue2[i];
totalip3 += bitvalue3[i];
totalip4 += bitvalue4[i];
//this is for the subnet. it displays the allocated amount of the first in the next ip address
totalOct2[i+1] = totalip2;
totalOct3[i+1] = totalip3;
totalOct4[i+1] = totalip4;
if (totalip4 > 254)
{
bitvalue4[i]=0;
totalOct3[i+1]++;
}
//this is for displaying ip ranges
lastip = totalOct4[i]+allocatedSize[i];
fistip=totalOct4[i]+1;
//subnet number starting at 1
cout << i+1 << " "
//number of host needed
<< hostnum[i] << " \t"
//allocated Size
<< allocatedSize[i] << " \t"
//address & mask
<< oct1 << "." << totalOct2[i] << "." << (totalOct3[i]) << "." << totalOct4[i] << "/" << subnetmask[i] << " \t" <<endl<<endl;
////first Assignable range
//<< oct1 << "." << totalOct2[i] << "." << totalOct3[i] << "." << totalOct4[i] << " - "
////last Assignable range
//<< oct1 << "." << totalOct2[i] << "." << totalOct3[i] << "." << lastip << endl;
}
cin.ignore();
cin.ignore();
return 0;
}
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