1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
void test(const char *format, ...)
{
va_list argp;
va_start(argp, format);
int n = 0;
static char sep[128];
while (*format != '\0')
{
if (*format == '%')
{
format++;
if (*format == '%')
{
putchar('%');
}
else if (*format >= '0' && *format <= '9')
{
n = (*format) - '0';
format++;
while (*format >= '0' && *format <= '9')
{
n *= 10;
n += (*format) - '0';
format++;
}
if (*format == '[')
{
format++;
int i = 0;
while (*format != ']')
{
sep[i++] = *format;
format++;
}
sep[i] = '\0';
format++;
}
if (*format == 'd')
{
int *ints = va_arg(argp, int *);
for (int i = 0; i < n; i++)
{
if (i > 0)
printf("%s", sep);
printf("%d", ints[i]);
}
}
else if (*format == 's')
{
const char **strs = va_arg(argp, const char **);
for (int i = 0; i < n; i++)
{
if (i > 0)
printf("%s", sep);
printf("%s", strs[i]);
}
}
}
else
{
fputs("Not implemented", stdout);
char char_to_print = va_arg(argp, int);
putchar(char_to_print);
}
}
else
{
putchar(*format);
}
format++;
}
va_end(argp);
}
int main()
{
int ints[] = {1, 2, 3, 6, 8, 2, 7, 8, 1, 245, 277254, 2642, 71, 717, 7};
const char *strs[2] = {"abc", "def"};
test("Hallo %15[ ]d %2[, ]s\n", ints, strs);
}
|
