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