diff --git a/cpp/string_to_bin.cpp b/cpp/string_to_bin.cpp
new file mode 100644
index 0000000..5cea052
--- /dev/null
+++ b/cpp/string_to_bin.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <fstream>
+#include <cstring>
+
+int main(int argc, char **argv)
+{
+    char str[70], tmp2[8];
+    std::cin >> str; // Input the sentence
+
+    std::fstream outfile;
+    outfile.open("20comm_exp1_bs.dat", std::ios::out); // Open the file
+
+    for (int i = 0; i < strlen(str); i++)
+    {
+        int temp = str[i];
+        for (int j = 8; j > 0; j--)
+        { // Convert ASCII to 8 bit binary
+            tmp2[j - 1] = temp % 2 + '0';
+            temp /= 2;
+        }
+        for (int j = 0; j < 8; j++)
+        { // Output the binary
+            std::cout << tmp2[j] << " ";
+            if (outfile.is_open())
+            { // Output the data to file
+                outfile << tmp2[j] << " ";
+            }
+        }
+    }
+    outfile << std::endl;
+    outfile.close(); // Close the file, the content will be saved
+    return 0;
+}
\ No newline at end of file