什么是数字促销? [英] What is numeric promotion?

问题描述

谁能告诉我什么是数字促销?

Can any one tell what is numeric promotion?

推荐答案

数字升级是将较小的数字类型转换为较大的数字类型，以便进行整数和浮点运算.在数字提升中，字节，字符和短值转换为int值.如果需要，还可以将int值转换为long值.根据需要将long和float值转换为double值.

Numeric promotion is the conversion of a smaller numeric type to a larger numeric type, so that integer and floating-point operations may take place. In numerical promotion, byte, char, and short values are converted to int values. The int values are also converted to long values, if necessary. The long and float values are converted to double values, as required.

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