diff --git a/Code/hello b/Code/output/hello
similarity index 100%
rename from Code/hello
rename to Code/output/hello
diff --git a/Code/output/printf b/Code/output/printf
new file mode 100644
index 0000000..3b4d311
Binary files /dev/null and b/Code/output/printf differ
diff --git a/Code/sizeof b/Code/output/sizeof
similarity index 100%
rename from Code/sizeof
rename to Code/output/sizeof
diff --git a/Code/test b/Code/output/test
similarity index 100%
rename from Code/test
rename to Code/output/test
diff --git a/Code/output/work1_0428 b/Code/output/work1_0428
new file mode 100644
index 0000000..4b1c717
Binary files /dev/null and b/Code/output/work1_0428 differ
diff --git a/Code/output/work2_0428 b/Code/output/work2_0428
new file mode 100644
index 0000000..a163a96
Binary files /dev/null and b/Code/output/work2_0428 differ
diff --git a/Code/printf.c b/Code/printf.c
new file mode 100644
index 0000000..4c11e66
--- /dev/null
+++ b/Code/printf.c
@@ -0,0 +1,11 @@
+#include<stdio.h>
+
+int main()
+{
+    int a;
+    printf("请输入一个数:\n");
+    scanf("%d", &a);
+    printf("a: %d\n",a);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/Code/work1_0428.c b/Code/work1_0428.c
new file mode 100644
index 0000000..1dc90d7
--- /dev/null
+++ b/Code/work1_0428.c
@@ -0,0 +1,9 @@
+#include<stdio.h>
+
+int main()
+{
+    printf("a:\n八进制:%o\n十进制:%d\n十六进制:%x\n字符:%c\n\n",'a','a','a','a');
+    printf("B:\n八进制:%o\n十进制:%d\n十六进制:%x\n字符:%c\n",'B','B','B','B');
+
+    return 0;
+}
\ No newline at end of file
diff --git a/Code/work2_0428.c b/Code/work2_0428.c
new file mode 100644
index 0000000..b91199b
--- /dev/null
+++ b/Code/work2_0428.c
@@ -0,0 +1,16 @@
+#include<stdio.h>
+
+int main()
+{
+    char name1[20],name2[20];
+    char sex1,sex2;
+    int id1,id2,grade1,grade2;
+    printf("请输入第一个同学的(用空格分隔)：姓名 学号 性别(M代表男性W代表女性) 成绩\n");
+    scanf("%s %d %c %d",name1,&id1,&sex1,&grade1);
+    printf("请输入第二个同学的(用空格分隔)：姓名 学号 性别(M代表男性W代表女性) 成绩\n");
+    scanf("%s %d %c %d",name2,&id2,&sex2,&grade2);
+    printf("第一个同学的信息：\n姓名：%s\n学号：%d\n性别：%c\n成绩：%d\n",name1,id1,sex1,grade1);
+    printf("第二个同学的信息：\n姓名：%s\n学号：%d\n性别：%c\n成绩：%d\n",name2,id2,sex2,grade2);
+
+    return 0;
+}
\ No newline at end of file