public static void main(String[] args) throws Exception { int a = 1; int b = 2; int c; /*c=a; a=b; b=c;*/ a = a + b; b = a - b; a = a - b; System.out.println("a= " + a + ",b=" + b); System.out.println("这是一个\"拼爹\"年代"); Scanner scanner = new Scanner(System.in); int l, w, s; final double PI = 3.1415926; boolean reg = false; while (!reg) { try { System.out.println("输入长度:"); l = scanner.nextInt(); System.out.println("输入宽度:"); w = scanner.nextInt(); s = l * w; System.out.println("长方形面积为= " + s); System.out.print("是否继续(y/n): "); if ("n".equalsIgnoreCase(scanner.next())) { reg = true; } } catch (Exception e) { System.out.println("你输入的数字类型不对"); break; } } System.out.println("计算结束"); }
int a = 1;
int b = 2;
int c;
/*c=a;
a=b;
b=c;*/
a = a + b;
b = a - b;
a = a - b;
System.out.println("a= " + a + ",b=" + b);
System.out.println("这是一个\"拼爹\"年代");
Scanner scanner = new Scanner(System.in);
int l, w, s;
final double PI = 3.1415926;
boolean reg = false;
while (!reg) {
try {
System.out.println("输入长度:");
l = scanner.nextInt();
System.out.println("输入宽度:");
w = scanner.nextInt();
s = l * w; System.out.println("长方形面积为= " + s);
System.out.print("是否继续(y/n): ");
if ("n".equalsIgnoreCase(scanner.next())) {
reg = true;
}
} catch (Exception e) {
System.out.println("你输入的数字类型不对");
break;
}
}
System.out.println("计算结束");
}