diff --git a/dot vscode/tasks.json b/dot vscode/tasks.json
index ef2b39c..6037983 100644
--- a/dot vscode/tasks.json	
+++ b/dot vscode/tasks.json	
@@ -9,7 +9,7 @@
                 "-ggdb",
                 "-std=c++20",
                 "-pedantic-errors",
-                "${file}",
+                "${fileDirname}/**.cpp",
                 "-o",
                 "${fileDirname}\\build\\${fileBasenameNoExtension}.exe"
             ],
@@ -30,7 +30,7 @@
                 "-DNDEBUG",
                 "-std=c++20",
                 "-pedantic-errors",
-                "${file}",
+                "${fileDirname}/**.cpp",
                 "-o",
                 "${fileDirname}\\build\\${fileBasenameNoExtension}.exe"
             ],
diff --git a/io.cpp b/io.cpp
new file mode 100644
index 0000000..6c03ca8
--- /dev/null
+++ b/io.cpp
@@ -0,0 +1,14 @@
+#include "io.h"
+#include <iostream>
+
+int readNumber()
+{
+    std::cout << "Enter a number to add: ";
+    int x{};
+    std::cin >> x;
+    return x;
+}
+void writeAnswer(int x)
+{
+    std::cout << "The answer is: " << x << "\n";
+}
\ No newline at end of file
diff --git a/io.h b/io.h
new file mode 100644
index 0000000..7c489bc
--- /dev/null
+++ b/io.h
@@ -0,0 +1,4 @@
+#pragma once
+
+int readNumber();
+void writeAnswer(int x);
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index bb43550..37ae2d9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,17 +1,11 @@
 #include <iostream> // for std::cout
-
-// Definition of user-defined function doPrint()
-void doPrint() // doPrint() is the called function in this example
-{
-    std::cout << "In doPrint()\n";
-}
+#include "io.h"
 
 // Definition of function main()
 int main()
 {
-    std::cout << "Starting main()\n";
-    doPrint();                      // Interrupt main() by making a function call to doPrint().  main() is the caller.
-    std::cout << "Ending main()\n"; // this statement is executed after doPrint() ends
-
+    int a{readNumber()};
+    int b{readNumber()};
+    writeAnswer(a + b);
     return 0;
 }
\ No newline at end of file