如何在Objective-C中使用scanf？

Question

朋友们如何在目标c中使用scanf，当我编译它时工作得很好但是在运行时间它是无限的...请尽快给我解决方案感谢.....

Answer 1

scanf is not useful for iPhone programs as there is no facility to run in console mode.

sscanf is sometimes useful but you are probably better off using NSNumberFormatter.

For more info see:

• Using Scanf with ObjC and iPhone

• Is there any way of reading from stdin on iPhone, either hardware or emulator?

Answer 2

Always check the return value of scanf.

check = scanf(...);
if (check != EXPECTED_VALUE) hanlde_error();