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20 lines
663 B
C
20 lines
663 B
C
/* File : strcmp.c
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Author : Richard A. O'Keefe.
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Updated: 10 April 1984
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Defines: strcmp()
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strcmp(s, t) returns > 0, = 0, or < 0 when s > t, s = t, or s < t
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according to the ordinary lexicographical order. To test for
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equality, the macro streql(s,t) is clearer than !strcmp(s,t). Note
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that if the string contains characters outside the range 0..127 the
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result is machine-dependent; PDP-11s and VAXen use signed bytes,
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some other machines use unsigned bytes.
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*/
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#include "strings.h"
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int strcmp(register const char *s, register const char *t)
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{
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while (*s == *t++) if (!*s++) return 0;
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return s[0]-t[-1];
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}
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