blob: d3e654e213fc7c5f8c7393e6679a902c1e9343cc (
plain)
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
|
#include <stdio.h>
#include <limits.h>
void
reverse(char s[])
{
int i = 0;
while (s[i] != '\0') {
++i;
}
--i;
char c;
for (int j = 0; j < i / 2; ++j) {
c = s[i - j];
s[i - j] = s[j];
s[j] = c;
}
}
void
itoa(int n, char s[])
{
int i, sign;
if ((sign = n) < 0) {
n = -n - 1;
}
i = 0;
do {
s[i++] = n % 10 + '0';
} while ((n /= 10) > 0);
if (sign < 0) {
s[i++] = '-';
}
s[i] = '\0';
reverse(s);
}
void
itob(int n, char s[], int b)
{
int i, sign;
if ((sign = n) < 0) {
n = -n;
}
i = 0;
do {
s[i++] = (n % b <= 9) ? n % b + '0' : n % b - 10 + 'a';
} while ((n /= b) > 0);
if (sign < 0) {
s[i++] = '-';
}
s[i] = '\0';
reverse(s);
}
int
main()
{
char s[32];
itoa(INT_MIN, s);
printf("%s\n", s);
itob(380, s, 16);
printf("%s\n", s);
return 0;
}
|
