Merge pull request ashutosh97#192 from zomsik/master

Added a question and answer to convert decimal numbers to binary numbers

Author: ashutosh97

Stack/Binary numbers/Question.txt

@@ -0,0 +1 @@
+The question is how to make binary numbers using a stack.

Stack/Binary numbers/solution.cpp

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+#include <iostream>
+#include <stack>
+using namespace std;
+int main()
+{
+  int a,b,l,c;
+  stack <int> stos;
+  cout << "Number to change: ";
+  cin >> a;
+	l=a;
+
+  while(a!=0)
+  {
+      b=a%2;
+      a=a/2;
+      stos.push(b);
+  }
+	cout << "Number " << l << " is equal to:  ";
+    while(!stos.empty())
+  {
+      cout << stos.top();
+      stos.pop();
+  }
+    cout << " in binary system.";
+
+return 0;
+}