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34 lines
655 B
C
34 lines
655 B
C
#include "str.h"
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size_t str_chr(const char *in, char needle) {
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#if 0
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register const char* t=in;
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register const char c=needle;
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for (;;) {
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if (!*t || *t==c) break; else ++t;
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if (!*t || *t==c) break; else ++t;
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if (!*t || *t==c) break; else ++t;
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if (!*t || *t==c) break; else ++t;
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}
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return (size_t)(t-in);
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#else
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size_t i;
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for (i=0; in[i] && in[i]!=needle; ++i) ;
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return i;
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#endif
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}
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#ifdef UNITTEST
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#include <assert.h>
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#include <string.h>
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int main() {
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char buf[100];
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strcpy(buf,"abcdefghijklmnopqrstuvwxyz");
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size_t i;
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for (i=0; i<26; ++i)
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assert(str_chr(buf,buf[i])==i);
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assert(str_chr(buf,'X')==26);
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}
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#endif
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