DemoDataTypeChange
public class DemoDataTypeChange {
public static void main(String[] args) {
/* int a=10;
int b=20;
int c=a+b;
System.out.println(c);*/
//自动转换:将取值范围小的类型,自动提升为取值范围大的类型
int i=1;
byte b=2;
//int类型和byte类型运算,结果是int类型
int c=b+i;
//自动类型转换的格式:范围大的数据类型 变量=范围小的数据类型值
double d=100;
}
}
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