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ITOD.C
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1987-10-04
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768b
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25 lines
#include stdio.h
/*
** itod -- convert nbr to signed decimal string of width sz
** right adjusted, blank filled; returns str
**
** if sz > 0 terminate with null byte
** if sz = 0 find end of string
** if sz < 0 use last byte for data
*/
itod(nbr, str, sz) int nbr; char str[]; int sz; {
char sgn;
if(nbr<0) {nbr = -nbr; sgn='-';}
else sgn=' ';
if(sz>0) str[--sz]=NULL;
else if(sz<0) sz = -sz;
else while(str[sz]!=NULL) ++sz;
while(sz) {
str[--sz]=(nbr%10+'0');
if((nbr=nbr/10)==0) break;
}
if(sz) str[--sz]=sgn;
while(sz>0) str[--sz]=' ';
return str;
}