For example: int I；; Here I is an integer variable. In this process, it has been allocated an integer space to store integer variables, which means that this space cannot store non-integer variables. If you insist on assigning it an inflexible variable, such as i= 1. 1, C language will directly take the integer part and discard the decimal part, and the result is still plastic.

If you insist on changing its data type during use, it is not impossible. That is forced type conversion, such as transposing plastic floating-point line j= (float)i, where i is equivalent to floating-point type, but only limited to this formula. In addition to this formula, it is still plastic surgery.