Bell 32V development

[unix-history] / usr / lib / learn / C / getnum.c

#include <stdio.h>

getnum()
{
       int c, n;

       n = 0;
       while ((c=getchar()) >= '0' && c <= '9')
               n = n*10 + c - '0';
       if (c == EOF)
               return(-1);
       return(n);
}