diff --git a/program 3.c b/program 3.c
new file mode 100644
index 0000000..15b9b05
--- /dev/null
+++ b/program 3.c	
@@ -0,0 +1,75 @@
+#include<stdio.h>
+struct stu
+{
+	int num;
+	float m,p,e,s,a;
+};
+
+struct stu stu[3];
+
+void min(struct stu *stu)
+{
+	int i,j;
+	struct stu t;
+	for(i=0;i<3;i++)
+	{
+		for(j=0;j<2-i;j++)
+		{
+			if((stu+j)->a>(stu+j+1)->a)
+			{
+				t= *(stu+j);
+				*(stu+j) = *(stu+j+1);
+				*(stu+j+1) = t;
+			} 
+		}
+	}
+	return;
+}
+
+void dd(void)
+{
+	int i;
+	for(i=0;i<3;i++)
+	{
+		scanf("%d",&stu[i].num);
+		scanf("%f",&stu[i].m);
+		scanf("%f",&stu[i].p);
+		scanf("%f",&stu[i].e);
+		stu[i].s=stu[i].m+stu[i].p+stu[i].e;
+		stu[i].a=stu[i].s/3;
+	}
+	min(stu);
+	for(i=0;i<3;i++)
+	{
+		printf("%d,%.1f,%.1f\n",stu[i].num,stu[i].s,stu[i].a);
+	}
+	return;
+} 
+
+int main()
+{
+	char input;
+	printf("                              1.Input\n");
+	printf("                              2.Output\n");
+	printf("                              3.Order\n");
+	printf("                              4.Quit\n");
+	scanf("%c",&input);
+	switch(input)
+	{
+		case('i'):
+			dd();
+			break;
+		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");
+			break;
+		default:
+			printf("Wrong input");
+	}
+	return 0;
+}