26 lines
324 B
C
26 lines
324 B
C
#include <ctype.h>
|
|
|
|
int isalpha(int c)
|
|
{
|
|
return ((unsigned)c|32)-'a' < 26;
|
|
}
|
|
|
|
int isdigit(int c)
|
|
{
|
|
return (unsigned)c-'0' < 10;
|
|
}
|
|
|
|
int isprint(int c)
|
|
{
|
|
return (unsigned)c-0x20 < 0x5f;
|
|
}
|
|
|
|
int isspace(int c)
|
|
{
|
|
return c == ' ' || (unsigned)c-'\t' < 5;
|
|
}
|
|
|
|
int isupper(int c)
|
|
{
|
|
return (unsigned)c-'A' < 26;
|
|
}
|