程序员都知道，也都会使用printf函数，但你知道它也有“安全隐患”吗？ 下面就来举例我说说： 这里有四个问题，下面会进行解答。 3 printf()函数的原理解释 明确这些问题首先须要明确printf()函数的工作原理。 printf()维持了一个需要打印的变量栈，默认情况下 ...

请细致注意看下面代码，有如以下奇怪的现象： int a=5;floatx=a; //这里转换是没有问题的。%f打印x是 5.000000 这里有四个问题 ...

The printf command offers well-defined behavior following the POSIX standard, which means it works the same way across shells and systems. Where echo often fails with escape sequences, printf handles ...

Even if you're already familiar with the printf command, if you got your information via "man printf" you may be missing a couple of useful features that are provided by bash's built-in version of the ...