When you start a command-line program, everything you type after the name is passed as an argument to the program. Arguments can be separated with whitespace characters. To pass command line argument in XCODE, select the project from the title bar and select Edit Schema, then select the Run Debug [...]
Stepping over the debugger to cursor locationRight-click on the line and select "Continue to Here".Set and unset the breakpoint to the line where your cursor is flashingCommand -\Right click for those with a one button mouseControl + clickFind matching brace, bracket or parenthesisDouble tap on one of the nested parenthesis, [...]
Introduction Optimization level defines how code are compiled and linked. For code debugging this should be disabled other wise breakpoint will not behave properly. Xcode will complain about the same by printing message "App Name was compiled with optimization - stepping may behave oddly; variables may not be available." on [...]