Ja by som si na to vybral C++ alebo C#. Ale je to úloha, na ktorú si môžeš zvoliť takmer ktorýkoľvek jazyk, napr. JavaScript:

function transform(text) {
  var lines = text.split("\n");
  var results = [];
  
  for (var i = 0; i < lines.length; ++i) {
    var values = lines[i].replace(/^\s+|\s+$/g, "").split(/\s+/);
    
    results.push(
      "<Control_Point_Data>\n" +
      "  <Control_Point_ID>" + values[0] + "</Control_Point_ID>\n" +
      "  <Control_Point_X_Value>" + values[3] + "</Control_Point_X_Value>\n" +
      "  <Control_Point_Y_Value>" + values[4] + "</Control_Point_Y_Value>\n" +
      "  <Control_Point_Z_Value>" + values[5] + "</Control_Point_Z_Value>\n" +
      "</Control_Point_Data>\n");
  }
  
  return results.join("");
}