update

src/io.cpp

@@ -12,3 +12,11 @@ void write_answer(int x)
 {
     std::cout << "The answer is: " << x << "\n";
 }
+
+void convert_char_to_ascii()
+{
+    std::cout << "Enter a single character: ";
+    char c{};
+    std::cin >> c;
+    std::cout << "You entered '" << c << "', which hass ASCII code " << static_cast<int>(c) << ".";
+}

src/io.h

@@ -2,3 +2,4 @@
 
 int read_number();
 void write_answer(int x);
+void convert_char_to_ascii();

src/main.cpp

@@ -8,6 +8,7 @@ int main()
     // int a{read_number()};
     // int b{read_number()};
     // write_answer(a + b);
+    // convert_char_to_ascii();
 
     std::cout << std::left; // left justify output
     std::cout << std::setw(16) << "bool:" << sizeof(bool) << " bytes\n";
@@ -19,5 +20,6 @@ int main()
     std::cout << std::setw(16) << "float:" << sizeof(float) << " bytes\n";
     std::cout << std::setw(16) << "double:" << sizeof(double) << " bytes\n";
     std::cout << std::setw(16) << "long double:" << sizeof(long double) << " bytes\n";
+
     return 0;
 }