?? ex_2_5_2.java
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/*
* 文件名 ex_2_5_2.java
* 說 明:演示基本算術運算符的使用
*/
class ex_2_5_2 {
public static void main(String args[]) {
// 整數算術運算
System.out.println("整數算術運算");
int a = 1 + 2 ;
int b = a * 3;
int c = b / 4;
int d = c - a;
int e = -d;
System.out.println("a = " + a);
System.out.println("b = " + b);
System.out.println("c = " + c);
System.out.println("d = " + d);
System.out.println("e = " + e);
// 雙精度浮點數算術運算
System.out.println("\n雙精度浮點數算術運算");
double da = 1 + 1;
double db = da * 3;
double dc = db / 4;
double dd = dc - a;
double de = -dd;
System.out.println("da = " + da);
System.out.println("db = " + db);
System.out.println("dc = " + dc);
System.out.println("dd = " + dd);
System.out.println("de = " + de);
}
}
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