ADD file via upload

作业2.1.c

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+#include<stdio.h>
+int main()
+{
+    char c;
+	printf("                              1.Input\n");
+	printf("                              2.Output\n");
+	printf("                              3.Order\n");
+	printf("                              4.Quit\n");
+	c=getchar();
+	switch(c)
+		{
+			case 'i':printf("You are trying to Input info");break;
+			case 'o':printf("You are trying to Output info");break;
+			case 'm':printf("You are trying to Make things ordered");break;
+			case 'q':printf("You are about to Quit");break;
+			default:printf("Wrong input");break;
+		}
+}