diff --git a/algorithm/stack/stack.c b/algorithm/stack/stack.c
new file mode 100644
index 0000000..8e63314
--- /dev/null
+++ b/algorithm/stack/stack.c
@@ -0,0 +1,33 @@
+#include "stack.h"
+
+int main()
+{
+	Stack *myStack;
+	int i,x;
+
+	//��ʼ��ջ
+	StackInitial(&myStack);
+
+	//��1-10��Ԫ������ջ
+	for(i=1;i<=10;i++){
+		StackPush(myStack,i);
+	}
+
+	//��ȡջ��Ԫ��
+	StackTop(myStack,&x);
+	printf("��ǰջ������Ԫ��Ϊ:%d\n",x);
+
+	//��ջ�ڵ�Ԫ���Ƴ�ջ
+	printf("���γ�ջ������Ԫ����������:\n");
+	while(StackNotEmpty(myStack)){
+		StackPop(myStack,&x);
+		printf("%d   ",x);
+	}
+
+	//�����������ͷ��ڴ�
+	Destroy(myStack);
+
+	getchar();
+	getchar();
+	return 0;
+}
\ No newline at end of file
diff --git a/algorithm/stack/stack.h b/algorithm/stack/stack.h
new file mode 100644
index 0000000..4f804cf
--- /dev/null
+++ b/algorithm/stack/stack.h
@@ -0,0 +1,87 @@
+#ifndef STACK_H
+#define STACK_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef int DataType;
+typedef struct Stack{
+	DataType data;
+	struct Stack *next;
+}Stack;
+
+//��ʼ��ջ
+void StackInitial(Stack **s)
+{
+	(*s)=(Stack *)malloc(sizeof(Stack));
+	(*s)->next=NULL;
+	if(!(*s)){
+		printf("�����ڴ�ռ�ʧ��!\n");
+		exit(0);
+	}
+}
+//�ж�ջ�Ƿ�Ϊ��
+int StackNotEmpty(Stack *s)
+{
+	if(s->next==NULL)
+		return 0;
+	else
+		return 1;
+}
+
+//��ջ
+int StackPush(Stack *s,DataType x)
+{
+	Stack *p;
+	p=(Stack *)malloc(sizeof(Stack));
+	if(!p){
+		printf("�����ڴ�ռ�ʧ��!\n");
+		exit(0);
+	}
+	p->data=x;
+	p->next=s->next;
+	s->next=p;
+	return 1;
+}
+
+//��ջ
+int StackPop(Stack *s,DataType *d)
+{
+	Stack *p=s->next;
+	if(s->next==NULL){
+		printf("��ջ�ѿգ�������Ԫ�س�ջ!\n");
+		return 0;
+	}
+	else{
+		s->next=p->next;
+		*d=p->data;
+		free(p);
+		return 1;
+	}
+}
+
+//ȡջ��Ԫ��
+int StackTop(Stack *s,DataType *d)
+{
+	if(s->next==NULL){
+		printf("��ջ�ѿ�!\n");
+		return 0;
+	}
+	else{
+		*d=s->next->data;
+		return 1;
+	}
+}
+
+//�ͷ�������ڴ�ռ�
+void Destroy(Stack *s)
+{
+	Stack *p,*p1;
+	p=s;
+	while(p!=NULL){
+		p1=p;
+		p=p->next;
+		free(p1);
+	}
+}
+#endif
\ No newline at end of file
diff --git a/pytorch_sequence.drawio b/pytorch_sequence.drawio
new file mode 100644
index 0000000..e3244ca
--- /dev/null
+++ b/pytorch_sequence.drawio
@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2022-04-01T07:14:25.820Z" agent="5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.60 Safari/537.36" etag="qMRSmuUBm_jrJj23OCB-" version="17.4.0" type="github"><diagram id="T5TTYnDaveVe9RZUQOAW" name="Page-1">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</diagram></mxfile>
\ No newline at end of file