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Annotation of researchv10no/cmd/basic/bite/src/right.c, revision 1.1

1.1     ! root        1: /* Copyright Bell Telephone Laboratories Whippany, N.J.
        !             2: 
        !             3:  *     /////////////////////////////////////
        !             4:  *     /////////////////////////////////////
        !             5:  *     ////////////// right.c ///////////////
        !             6:  *     /// J. P. Hawkins WH X4610 8C-001 ///
        !             7:  *     ///// Thu Mar  5 06:15:32 1981 //////
        !             8:  *     /////////////////////////////////////
        !             9:  *     /////////////////////////////////////
        !            10:  *     @(#) right.c: V1.1 3/5/81
        !            11: 
        !            12:  * function right$(string,n)
        !            13:  *     where the last n chars of the string are returned
        !            14:  *             n is a number or numerical expression
        !            15:  */
        !            16: 
        !            17: extern char scratch[];
        !            18: 
        !            19: char   *
        !            20: right(args)
        !            21: char   args[];
        !            22: {
        !            23:        double  evalx();
        !            24:        char    *prncpy();
        !            25:        char    *holdptr;
        !            26:        char    num[20];
        !            27:        int     number,length;
        !            28:        char    result[80];
        !            29: 
        !            30:        holdptr = args;
        !            31:        holdptr = prncpy(result,args)+1; /* point to string field */
        !            32:        prncpy(num,holdptr);    /* get number of chars */
        !            33:        evals(result,scratch);
        !            34:        number=(int)evalx(num); /* convert expr to integer */
        !            35:        length=strlen(scratch); /* get actual length of string */
        !            36:        if(number > length)     /* if requested number > length */
        !            37:                number = length; /* just return the string */
        !            38:        strncpy(result,&scratch[length-number],number);
        !            39:        result[number] = '\0';
        !            40:        return(result);
        !            41: }

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