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29 lines
442 B
C++
29 lines
442 B
C++
#include <ctype.h>
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#include <string.h>
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int ispunct(int c)
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{
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const char* punctuation_characters = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";
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return !!strchr(punctuation_characters, c);
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}
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int isprint(int c)
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{
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return c >= 0x20 && c != 0x7f;
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}
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int isalnum(int c)
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{
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return isalpha(c) || isdigit(c);
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}
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int isalpha(int c)
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{
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return isupper(c) || islower(c);
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}
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int iscntrl(int c)
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{
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return (c >= 0 && c <= 0x1f) || c == 0x7f;
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}
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