1、int多少位数字

int可以表示大约-2,147,483,648到2,147,483,647之间的数字，是一个32位（4字节）整数类型。

2、long int多少位数字

在大多数计算机系统中，long int 是一个有符号整数类型，占用4个字节（32位）。其取值范围为 -2,147,483,648 到 2,147,483,647（可以表示 10 位数字）。但是，具体 int 数据类型的大小可能会因计算机系统的不同而有所不同。

3、int可以输入多少个数字

In most programming languages, the "int" data type is used to represent integers, which are whole numbers without any decimal places. The number of digits that can be stored in an "int" data type depends on the size of the data type.

In most programming languages, an "int" data type is typically 32 bits or 4 bytes in size. This means that it can store integers within a range of -2,147,483,648 to 2,147,483,647 (inclusive).

If you try to assign a value that exceeds this range to an "int" variable, you may encounter an overflow error or the value may wrap around to the other end of the range.