diff --git a/C++/Program 29/DecimaltoBinary.cpp b/C++/Program 29/DecimaltoBinary.cpp
new file mode 100644
index 00000000..be854a50
--- /dev/null
+++ b/C++/Program 29/DecimaltoBinary.cpp	
@@ -0,0 +1,33 @@
+// number to binary number
+ 
+#include <iostream>
+using namespace std;
+ 
+// function to convert decimal to binary
+void decToBinary(int n)
+{
+    // array to store binary number
+    int binaryNum[32];
+ 
+    // counter for binary array
+    int i = 0;
+    while (n > 0) {
+ 
+        // storing remainder in binary array
+        binaryNum[i] = n % 2;
+        n = n / 2;
+        i++;
+    }
+ 
+    // printing binary array in reverse order
+    for (int j = i - 1; j >= 0; j--)
+        cout << binaryNum[j];
+}
+ 
+// Driver program to test above function
+int main()
+{
+    int n = 17;
+    decToBinary(n);
+    return 0;
+}
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diff --git a/C++/Program 29/Readme.md b/C++/Program 29/Readme.md
new file mode 100644
index 00000000..13485264
--- /dev/null
+++ b/C++/Program 29/Readme.md	
@@ -0,0 +1 @@
+C++ program to convert a decimal.
\ No newline at end of file