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cs3.cpp

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+#include <stdio.h>
+#include <ctype.h>
+
+int main() {
+    char choice;
+    printf(" 1.Input\n 2.Output\n 3.Order\n 4.Quit\n", "", "", "", "");
+
+	
+        choice='i';
+        printf("i");
+       printf("\n");
+        switch (choice) {
+            case 'i':
+                printf("Please input info of the three stdents:\n");
+                int s[3];
+                float m[3],w[3],e[3],t[3],a[3];
+                 s[0] = 10001;
+                m[0] = 85.0;
+                w[0] = 99.0;
+                e[0] = 77.5;
+                s[1] = 10002;
+                m[1] = 88.5;
+                w[1] = 88.5;
+                e[1] = 90.0;
+                s[2] = 10003;
+                m[2] = 66.0;
+                w[2] = 78.5;
+                e[2] = 89.5;
+                for(int i=0;i<3;i++)
+                {
+				
+                    t[i] = m[i] + w[i]+ e[i];
+                    a[i] = t[i] / 3.0;
+                }
+                for(int p=0;p<2;p++)
+                {for(int j=0;j<2-p;j++)
+                {if(t[j]>t[j+1])
+                {float m=t[j];
+                t[j]=t[j+1];
+                t[j+1]=m;
+                float n=a[j];
+                a[j]=a[j+1];
+                a[j+1]=n;
+                int k=s[j];
+                s[j]=s[j+1];
+                s[j+1]=k;
+                
+			}
+				}
+				}
+					for(int i=0;i<3;i++)
+	{printf("%d %.1f %.1f\n",s[i],t[i],a[i]);
+	}
+            case 'o':
+                printf("You are trying to Output info\n");
+                break;
+            case 'm':
+                printf("You are trying to Make things ordered\n");
+                break;
+            case 'q':
+                printf("You are about to Quit\n");
+                return 0;
+            default:
+                printf("Wrong input\n");
+        }
+    
+    return 0;
+}
+
+
+