diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/main.c" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/main.c"
index ef253634aa4de8a280704dad3aa73e2f9dc1faa2..973fe98efe9e06e02009e5ca65176c30191aa185 100644
--- "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/main.c"
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/main.c"
@@ -5,6 +5,8 @@ typedef void(F_MY_PRINT)(int pp[]);
 
 void myPrint(int pp[])
 {
+    if (NULL == pp)
+        return;
     int i = 0;
     for (; i < 26; ++i)
     {
@@ -14,6 +16,8 @@ void myPrint(int pp[])
 
 void fun(char *tt, int pp[], F_MY_PRINT *myprint)
 {
+    if (tt == NULL || pp == NULL || myprint == NULL)
+        return;
     char *ptr = tt;
     int index = 0;
     while (*ptr != '\0')
@@ -25,6 +29,7 @@ void fun(char *tt, int pp[], F_MY_PRINT *myprint)
         }
         ++ptr;
     }
+
     myPrint(pp);
 }
 int main()
@@ -33,4 +38,28 @@ int main()
     char *str = "aaabbbcccddd";
     fun(str, array, myPrint);
     return 0;
+}
+
+void fun(char *tt, int pp[], F_MY_PRINT *myprint)
+{
+    char *ptr = NULL;
+    int index = 0;
+
+    if (NULL == tt || NULL == pp || NULL == myprint)
+    {
+        return;
+    }
+
+    for (ptr = tt; *ptr != '\0'; ++ptr)
+    {
+        index = *ptr - 'a';
+        if (0 <= index && 26 > index)
+        {
+            ++pp[index];
+        }
+    }
+
+    myPrint(pp);
+
+    return;
 }
\ No newline at end of file
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/tset" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/tset"
index 90107580bc99d06259738723238a996a9aa74075..7a8366204170e5f8183fc0ab54d964d316b3e419 100755
Binary files "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/tset" and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2412/tset" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2413/main.c" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2413/main.c"
new file mode 100644
index 0000000000000000000000000000000000000000..57b0a60028805ff94be73c58eb54aa696aca5a66
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2413/main.c"
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+char *BONC_whereis(const char *bin_name, const char *after_who)
+{
+}
+int main(int argc, cha *argv[])
+{
+    access("/usr/sbin/ls", R_OK)
+
+        return 0;
+}
\ No newline at end of file
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-1.png" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-1.png"
new file mode 100644
index 0000000000000000000000000000000000000000..2813bdea6b15d0b6237e20088fd03233d63e4a20
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-1.png" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-2.png" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-2.png"
new file mode 100644
index 0000000000000000000000000000000000000000..e81d1cc8c7da7ad0f8a25fd62362431ac0b0ab3a
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/04-2.png" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/7z2201-x64.exe" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/7z2201-x64.exe"
new file mode 100644
index 0000000000000000000000000000000000000000..ee08407a6652d89d9da5b2d4efaed281895fcb7d
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/7z2201-x64.exe" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/bonc_tool.h" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/bonc_tool.h"
new file mode 100644
index 0000000000000000000000000000000000000000..ce651f84295c35c4e9eb32d1a199d234e2d3cf88
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/bonc_tool.h"
@@ -0,0 +1,12 @@
+#ifndef BONC_TOOL_H
+#define BONC_TOOL_H
+
+#define bonc_free(p)     \
+    if (p)               \
+    {                    \
+        free((void *)p); \
+        p = NULL;        \
+    }
+
+#define bonc_printf_In(fmt, ...) printf("FUNCTION:%s  LINE=%d  OUTPUT: " fmt "\r\n", __FUNCTION__, __LINE__, ##__VA_ARGS__);
+#endif
\ No newline at end of file
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/file" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/file"
new file mode 100644
index 0000000000000000000000000000000000000000..e71843cb000934900f351f49430e633c561fe597
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/file"
@@ -0,0 +1,3 @@
+adsdada
+dad
+adsdada
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/main.c" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/main.c"
new file mode 100644
index 0000000000000000000000000000000000000000..6ae3fc6966329f89f8beb926363d6abc44e7d46e
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/main.c"
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include "bonc_tool.h"
+
+typedef void EMAIL(const char *url);
+typedef struct UandDo
+{
+    const char *url;
+    EMAIL *sendemail;
+} UandDo;
+
+void do_after(const char *url)
+{
+    char buf[1024];
+    char path[1024];
+
+    getcwd(path, 1024);
+    sprintf(buf, "echo \"恭喜！url=%s的文件下载成功，下载路径为:%s，请注意查收\" | mail -s \"恭喜！文件下载成功\" v13b837@163.com", url, path);
+    system(buf);
+}
+
+void *threadhandler(void *Ud)
+{
+    char buf[1024];
+    UandDo *tem = (UandDo *)Ud;
+
+    sprintf(buf, "curl  %s  -O", tem->url);
+    system(buf);
+    tem->sendemail(tem->url);
+}
+
+void BONC_NB_download(const char *url, EMAIL *sendemail)
+{
+    UandDo Ud;
+    pthread_t thfd;
+    Ud.url = url;
+    Ud.sendemail = sendemail;
+
+    if (pthread_create(&thfd, NULL, threadhandler, (void *)&Ud) != 0)
+    {
+        printf("false!\r\n");
+    }
+
+    sleep(1);
+    return;
+}
+
+int main(int argc, char *argv[])
+{
+    if (2 > argc)
+    {
+        bonc_printf_In("Please enter url!  Suchas : mydownload https://7-zip.org/a/7z2201-x64.exe");
+        return -1;
+    }
+    BONC_NB_download(argv[1], do_after);
+
+    return 0;
+}
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/makefile" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/makefile"
new file mode 100644
index 0000000000000000000000000000000000000000..c9738a230a913579512061a209898f0ca8949031
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/makefile"
@@ -0,0 +1,5 @@
+.PHONY:clean
+mydownload:main.c bonc_tool.h
+	gcc $^  -o  $@ -lpthread
+clean:
+	rm -f ./7z2201-x64.exe
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/mydownload" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/mydownload"
new file mode 100755
index 0000000000000000000000000000000000000000..d0aaccfd3f04beb70c31274080c317293d9cf332
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2414/mydownload" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/05.png" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/05.png"
new file mode 100644
index 0000000000000000000000000000000000000000..55a3676941e9d5a84f6df6cb85a5916ef513a6d5
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/05.png" differ
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/bonc_tool.h" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/bonc_tool.h"
new file mode 100644
index 0000000000000000000000000000000000000000..6511aa851b6073dfaf1660e440beaaa6a5d7f180
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/bonc_tool.h"
@@ -0,0 +1,14 @@
+#ifndef BONC_TOOL_H
+#define BONC_TOOL_H
+
+#define bonc_free(p)     \
+    if (p)               \
+    {                    \
+        free((void *)p); \
+        p = NULL;        \
+    }
+
+#define bonc_printf_In(fmt, ...) printf("FUNCTION:%s  LINE=%d  OUTPUT: " fmt "\r\n", __FUNCTION__, __LINE__, ##__VA_ARGS__);
+#define STRUCT_MEM_OFFSET(type, member) ((unsigned int)&(((type *)0)->member))
+#define STRUCT_PTR_MEM(ptr, type, member) (type *)((char *)ptr - STRUCT_MEM_OFFSET(type, member))
+#endif
\ No newline at end of file
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/main.c" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/main.c"
new file mode 100644
index 0000000000000000000000000000000000000000..545521cf734827f6aa60d64aac8f0d758bd3398a
--- /dev/null
+++ "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/main.c"
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "bonc_tool.h"
+
+typedef struct A
+{
+    int a;
+    char b;
+    float c;
+} A;
+int main()
+{
+    A a;
+    float *pc = &(a.c);
+
+    bonc_printf_In("OFFSET= %d", STRUCT_MEM_OFFSET(A, c))
+        bonc_printf_In("a.PTR= %p", &(a.a))
+            bonc_printf_In("S.PTR= %p", STRUCT_PTR_MEM(pc, A, c))
+}
\ No newline at end of file
diff --git "a/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/test" "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/test"
new file mode 100755
index 0000000000000000000000000000000000000000..2bd36b7905e6a6e0772a0ec7f97a20e63f7cb070
Binary files /dev/null and "b/\344\273\273\345\212\241\345\215\22504/\351\276\231\344\270\207/\344\273\273\345\212\2415/test" differ