1 void PrintInt(
int i)
2 {
3 int sign = i>
0 ?
0 :
1;
4 u8 s[
10];
5 int cnt=
0;
6 if(sign)
7 {
8 StatlWrite((u8 *)
'-',
1);
9 i = -
i;
10 }
11 int ten = i%
10;
12 while(i)
13 {
14 s[cnt] = ten+
'0';
15 cnt++
;
16 i /=
10;
17 ten = i%
10;
18 }
19 while(cnt>
0)
20 {
21 StatlWrite(&s[--cnt],
1);
22 }
23 }
24
25 void PrintStr(
char*
str)
26 {
27 while(*str !=
' ')
28 StatlWrite((u8 *)str++,
1);
29 }
30
31 void PrintChar(u8 *
c)
32 {
33 StatlWrite((u8 *)c,
1);
34 }
35
36
37
38 int myprintf (
char *
format, ...)
39 {
40 va_list arg;
41 static char stepflag =
0;
42 int Decdate;
43 char Hex;
44 char*
String;
45
46 va_start (arg, format);
47 do
48 {
49 if(*format !=
'%')
50 {
51 if(stepflag==
1)
52 {
53 stepflag =
0;
54 format++
;
55 }
56 else
57 {
58 PrintChar((u8*)format++
);
59 }
60 }
61 else
62 {
63 stepflag =
1;
64 switch(*(++
format))
65 {
66 case(
'd'):
67 Decdate = va_arg(arg,
int);
68 PrintInt(Decdate);
69 break;
70 case(
'c'):
71 Hex = va_arg(arg,
int);
72 //PrintChar(Hex);
73 break;
74 case(
's'):
75 String = va_arg(arg,
char *
);
76 //PrintStr(String);
77 break;
78 default:
79 //myprintf("I need relax.");
80 break;
81 }
82 }
83 }
84 while(*format !=
'\0');
85
86 va_end (arg);
87 return 1;
88 }
转载于:https://www.cnblogs.com/liushuhe1990/p/9608981.html
