add xunhuan

Code/test.c

@@ -1,12 +0,0 @@
-#include <stdio.h>
-
-int main() 
-{
-	
-	
-
-
-
-
-	return 0;
-}

Code/xunhuan1.c

@@ -0,0 +1,12 @@
+#include<stdio.h>
+
+int main()
+{
+    int x = 0,i = 0;
+    for(i = 1; i <= 100; i++)
+    {
+        x += i;
+    }
+    printf("%d\n", x);
+    return 0;
+}

Code/xunhuan2.c

@@ -0,0 +1,22 @@
+#include<stdio.h>
+
+int main()
+{
+    int x = 0,y = 0;
+    while(1)
+    {
+        scanf("%d %d", &x , &y);
+
+        if(x > y)
+            printf("%d\n", x);
+        else if(x < y)
+            printf("%d\n", y);
+        else
+        {
+            printf("x = y\nexit\n");
+            break;
+        }
+    }
+
+    return 0;
+}

Code/yinyee.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+
+int main() 
+{
+	float yye;
+	int grade;
+
+	printf("请输入营业额：(W)\n");
+	scanf("%f",&yye);
+	if(yye > 100)
+		grade = 6;
+	else if(yye > 80)
+		grade = 5;
+	else if(yye > 40)
+		grade = 4;
+	else if(yye > 20)
+		grade = 3;
+	else if(yye > 10)
+		grade = 2;
+	else if(yye > 0)
+		grade = 1;
+	else
+	{
+		printf("营业额不能为0或负数\n");
+		return 0;
+	}
+
+	switch(grade)
+	{
+		case 1:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.1);
+			break;
+		}
+		case 2:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.075);
+			break;
+		}
+		case 3:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.05);
+			break;
+		}
+		case 4:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.03);
+			break;
+		}
+		case 5:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.015);
+			break;
+		}
+		case 6:
+		{
+			printf("需要缴纳%.2fW的加盟费\n",yye*0.01);
+			break;
+		}
+
+	}
+	
+	return 0;
+}