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28 lines
896 B
C
28 lines
896 B
C
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/*----------------------------------------------------------------------*\
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| NAME : reverse |
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| CREATED : 16-August-83 LAST MODIFIED: 16-August-83 |
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| FUNCTION: Reverse reverses a string in place. |
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| INPUT : str -- ptr to string that will be reversed.|
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| OUTPUT : Reverses string pointed to by str in place. |
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| No return value. |
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\*----------------------------------------------------------------------*/
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#include <portab.h>
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#include "utildef.h"
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VOID reverse( str )
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BYTE str[]; /* string to reverse */
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{
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WORD head; /* head of string index */
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WORD tail; /* tail of string index */
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WORD cbuff; /* current char. buffer */
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for( head=0,tail=strlen( str )-1; head < tail; head++,tail-- )
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{
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cbuff = str[head];
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str[head] = str[tail];
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str[tail] = cbuff;
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}
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}
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