diff --git a/decimal to binary b/decimal to binary
new file mode 100644
index 0000000..8946535
--- /dev/null
+++ b/decimal to binary	
@@ -0,0 +1,50 @@
+#include<iostream>
+using namespace std;
+int bin(int a);
+int calc(int a);
+int main()
+{
+int b;
+cout<<"Enter the size of array = ";
+cin>>b;
+int a[b];
+cout<<"Enter the numbers in array =";
+for (int i = 0; i < b; i++)
+{
+    cin>>a[i];
+}
+
+for (int i = 0; i < b; i++)
+{       int num=a[i];
+    bin(num);
+    cout<<endl;
+}
+return 0;
+}
+int bin(int a)
+{
+int dec=a;
+int s=calc(dec);
+int x[s];
+for (int i = 0; i < s; i++)
+{x[i]=dec%2;
+dec/=2;   
+
+}
+cout<<"Binary String is = ";
+
+for (int i = (s-1); i >=0; i--)
+{
+    cout<<x[i];
+}
+return 0 ;
+}
+//-----------------------------
+int calc(int a)
+{int count=1;
+while(a!=1)
+{count++;
+a/=2;
+}
+return count;
+}