You typed CTRL+C to stop executing a program that installed a CTRL-C handler. The following types of programs may install CTRL-C handlers: ■ Programs that use floating-point arithmetic ■ Programs that make signal( SIG_INT... ) calls ■ External libraries Choose <Yes> to restart the program. If you choose <No> and continue execution, your program might cause the system to crash. To avoid this problem, use CTRL+BREAK instead of CTRL+C to terminate programs within the QuickC environment.