Initial data commit

Task/Call-a-function/Dart/call-a-function.dart

@@ -0,0 +1,30 @@
+void main() {
+  // Function definition
+  // See the "Function definition" task for more info
+  void noArgs() {}
+  void fixedArgs(int arg1, int arg2) {}
+  void optionalArgs([int arg1 = 1]) {}
+  void namedArgs({required int arg1}) {}
+  int returnsValue() {return 1;}
+
+  // Calling a function that requires no arguments
+  noArgs();
+
+  // Calling a function with a fixed number of arguments
+  fixedArgs(1, 2);
+
+  // Calling a function with optional arguments
+  optionalArgs();
+  optionalArgs(2);
+
+  // Calling a function with named arguments
+  namedArgs(arg1: 1);
+
+  // Using a function in statement context
+  if (true) {
+    noArgs();
+  }
+
+  // Obtaining the return value of a function
+  var value = returnsValue();
+}