81 lines
981 B
C++
81 lines
981 B
C++
#include <ctype.h>
|
|
|
|
int isalnum(int c)
|
|
{
|
|
return isdigit(c) || isalpha(c);
|
|
}
|
|
|
|
int isalpha(int c)
|
|
{
|
|
return islower(c) || isupper(c);
|
|
}
|
|
|
|
int isascii(int c)
|
|
{
|
|
return c <= 0x7F;
|
|
}
|
|
|
|
int isblank(int c)
|
|
{
|
|
return c == ' ' || c == '\t';
|
|
}
|
|
|
|
int iscntrl(int c)
|
|
{
|
|
return c < 32 || c == 0x7F;
|
|
}
|
|
|
|
int isdigit(int c)
|
|
{
|
|
return '0' <= c && c <= '9';
|
|
}
|
|
|
|
int isgraph(int c)
|
|
{
|
|
return 0x21 <= c && c <= 0x7E;
|
|
}
|
|
|
|
int islower(int c)
|
|
{
|
|
return 'a' <= c && c <= 'z';
|
|
}
|
|
|
|
int isprint(int c)
|
|
{
|
|
return isgraph(c) || c == ' ';
|
|
}
|
|
|
|
int ispunct(int c)
|
|
{
|
|
return isgraph(c) && !isalnum(c);
|
|
}
|
|
|
|
int isspace(int c)
|
|
{
|
|
return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v';
|
|
}
|
|
|
|
int isupper(int c)
|
|
{
|
|
return 'A' <= c && c <= 'Z';
|
|
}
|
|
|
|
int isxdigit(int c)
|
|
{
|
|
return isdigit(c) || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F');
|
|
}
|
|
|
|
int toupper(int c)
|
|
{
|
|
if (!islower(c))
|
|
return c;
|
|
return 'A' + (c - 'a');
|
|
}
|
|
|
|
int tolower(int c)
|
|
{
|
|
if (!isupper(c))
|
|
return c;
|
|
return 'a' + (c - 'A');
|
|
}
|