格式“{0}”在小数点前的零位符号后不能有数字符号。
Format '{0}' cannot have digit symbol after zerdigit symbol before a decimal point.
不同事物定位符号传递量化信息的方法不同，展现点状事物量化信息主要方法是量化点位符号法；
Different graph symbols transfer information in different manners. The quantitative information of the point object is shown by the quantitative point location;
类似地，当一个小整数（char、short、int）被传递给 printf (3) 时，它会扩展成 64 位的，符号会适当地进行扩展。
Similarly, when a small integer (char, short, int) is passed into printf (3), it will be widened to 64-bits and the sign will be extended if appropriate.
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