diff --git a/步骤3.c b/步骤3.c
new file mode 100644
index 0000000..24d39bb
--- /dev/null
+++ b/步骤3.c
@@ -0,0 +1,43 @@
+#include<stdio.h>
+void Input(int b[],float c[],float d[],float e[])/*ÊäÈë³ÌÐò*/
+{
+	int i;
+	for(i=1;i<=3;i++)
+	scanf("%d%f%f%f",&b[i],&c[i],&d[i],&e[i]);
+	for(i=1;i<=3;i++)
+	printf("%d,%.1f,%.1f,%.1f\n",b[i],c[i],d[i],e[i]);
+}
+int main()
+{
+	int i;
+	char a;
+	int b[1001];
+	float c[1001],d[1001],e[1001];
+	for(i=1;i<=30;i++)
+	printf(" ");
+	printf("1.Input\n");
+	for(i=1;i<=30;i++)
+	printf(" ");
+	printf("2.Output\n");
+	for(i=1;i<=30;i++)
+	printf(" ");
+	printf("3.Order\n");
+	for(i=1;i<=30;i++)
+	printf(" ");
+	printf("4.Quit\n");
+	scanf("%c",&a);
+	if(a=='i')
+	{
+	printf("Please input info of the three students:");
+	Input(b,c,d,e);
+}
+	else if(a=='o')
+	printf("You are trying to Output info");
+	else if(a=='m')
+	printf("You are trying to Make things ordered");
+	else if(a=='q')
+	printf("You are about to Quit");
+	else 
+	printf("Wrong input");
+	return 0;
+}