# C++ Program / Code of K Means Clustering with Example

Get code of K Means Clustering with Example in C++ language. This is very simple code with example. Copy this code from here and paste into any compiler and run code.

#include <iostream> #include <conio.h> #include <stdlib.h> using namespace std; int main() { int numbers, k, kvals[25], prevKvals[25], steps = 1, addition[25][100], count = 0, groups[25][100], min, groupnum, value, sum, ok = 1, nums[100]; cout << "How many numbers you want to enter: "; cin >> numbers; cout << "Enter value of k: "; cin >> k; //get numbers for(int i = 0; i < numbers; i++) { cout << "Enter Number " << i+1 << ": "; cin >> nums[i]; } // set values of C's for(int i = 0; i < 3; i++) { kvals[i] = nums[i]; } //show values of user cout << "You have entered: "; for(int i = 0; i < numbers; i++) { cout << nums[i] << ", "; } //while(steps < 10) while(ok == 1) { cout << endl << "Itration Number: " << steps; //make calculations (C - bla bla bla) for(int i = 0; i < k; i++) { for(int j = 0; j < numbers; j++) { addition[i][j] = abs(kvals[i] - nums[j]); } } //make groups of number(C) for(int i = 0; i < numbers; i++) { min = 100000; for(int j = 0; j < k; j++) { if(addition[j][i] < min) { min = addition[j][i]; value = nums[i]; groupnum = j; } } groups[groupnum][i] = value; } //show results of calculations (C - bla bla bla) cout << endl << "Calculations" << endl; for(int i = 0; i < numbers; i++) { for(int j = 0; j < k; j++) { cout << addition[j][i] << "\t"; } cout << endl; }

// show groups and get new C's cout << endl << "Gruops" << endl; for(int i = 0; i < k; i++) { sum = 0; count = 0; cout << "Group " << i+1 << ": "; for(int j = 0; j < numbers; j++) { if(groups[i][j] != NULL) { cout << groups[i][j] << "\t"; sum += groups[i][j]; count++; } } prevKvals[i] = kvals[i]; kvals[i] = sum/count; cout << "\t=\t" << kvals[i] << endl; } //make empty array of groups for(int i = 0; i < 25; i++) { for(int j = 0; j < 100; j++) { groups[i][j] = NULL; } } //check condition of termination ok = 0; for(int i = 0; i < k; i++) { if(prevKvals[i] != kvals[i]) { ok = 1; } } if(ok != 1) { getch(); } steps++; } // end while loop getch(); return 0; }

C++ Program / Code of K Means Clustering with Example
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