cassert() [1/6]

static void xtd::diagnostics::debug::cassert ( bool  condition )

static

Checks for a condition; if the condition is false, displays a message box that shows the call stack.

Parameters

condition

The conditional expression to evaluate. If the condition is true, a failure message is not sent and the message box is not displayed.

Examples

The following example shows how to use xtd::diagnostics::debug::cassert_ method.

#include <xtd/diagnostics/debug>
#include <xtd/console>
 
using namespace xtd;
using namespace xtd::diagnostics;
 
auto main() -> int {
  // Uncomment following lines to remove assert dialog
  //for (auto listener : debug::listeners())
  //  if (is<default_trace_listener>(listener))
  //    as<default_trace_listener>(listener)->assert_ui_enabled(false);
 
  auto index = 0;
  console::write_line("Start application");
  debug::cassert_(index > 0);
  console::write_line("End application");
}
 
// This code produces the following output :
//
// > If user clicks assert dialog 'Abort' button:
// Start application
//
// > If user clicks assert dialog 'Retry' button:
// Start application
// > Break the debugger on file debug_cassert.cpp line 12.
// > If user choose continue running after break.
// End application
//
// > If user clicks assert dialog 'Ignore' button:
// Start application
// End application