diff --git "a/24 \351\231\210\344\277\212\345\223\262/20230320 \344\275\234\344\270\232.md" "b/24 \351\231\210\344\277\212\345\223\262/20230320 \344\275\234\344\270\232.md"
new file mode 100644
index 0000000000000000000000000000000000000000..b3ae4f4325e6ba052210a1f6705e85ef1683b602
--- /dev/null
+++ "b/24 \351\231\210\344\277\212\345\223\262/20230320 \344\275\234\344\270\232.md"	
@@ -0,0 +1,79 @@
+```java
+public class s {
+    public static void main(String[] args) {
+        System.out.println("1");
+        System.out.println("22");
+        System.out.println("333");
+        System.out.println("4444");
+        System.out.println("55555");
+        System.out.println('6');
+        System.out.println('7');
+        System.out.println('8');
+        System.out.println('9');
+        System.out.println('0');
+        System.out.println(true);
+        System.out.println(false);
+        byte b1 = -128;
+        byte b2 = 127;
+        System.out.println(b1);
+        System.out.println(b2);
+
+        short s1 = -32768;
+        short s2 = 32767;
+        System.out.println(s1);
+        System.out.println(s2);
+
+        int i1 = -2147483648;
+        int i2 = 2147483647;
+        System.out.println(i1);
+        System.out.println(i2);
+
+        long l1 = -2147483649L;
+        long l2 = 2147483648L;
+        System.out.println(l1);
+        System.out.println(l2);
+
+        float f1 = -3.14F;
+        float f2 = 3.14F;
+        System.out.println(f1);
+        System.out.println(f2);
+
+        double d1 = -3.4;
+        double d2 = 3.4;
+        System.out.println(d1);
+        System.out.println(d2);
+
+        int a = 1;
+        int b = 2;
+        int t = a;
+        a = b;
+        b = t;
+        System.out.println(a);
+        System.out.println(b);
+
+        int x = 100;
+        int y = 200;
+        int sum = x + y;
+        int sub = x - y;
+        int mul = x * y;
+        int div = x / y;
+        System.out.println("x,y和为"+sum);
+        System.out.println("x,y差为"+sub);
+        System.out.println("x,y积为"+mul);
+        System.out.println("x,y商为"+div);
+
+        double x1 = 100.8;
+        double y1 = 20.6;
+        double sum1 = x1 + y1;
+        double sub1 = x1 - y1;
+        double mul1 = x1 * y1;
+        double div1 = x1 / y1;
+        System.out.println("x,y和为"+sum1);
+        System.out.println("x,y差为"+sub1);
+        System.out.println("x,y积为"+mul1);
+        System.out.println("x,y商为"+div1);
+
+    }
+}
+
+```