Files
unix-v6/source/s5/rin.c
T
2018-01-27 22:35:41 +09:00

34 lines
335 B
C

rin()
{
double d;
register n, c, f;
d = 0.;
f = 0;
n = 0;
loop:
c = getchar();
if(c == '\0')
exit();
if(c == '-') {
f++;
goto loop;
}
if(c == '.') {
n++;
goto loop;
}
if(c>='0' && c<='9') {
if(n)
n++;
d = d*10.+c-'0';
goto loop;
}
if(f)
d = -d;
for(f=1; f<n; f++)
d =/ 10.;
n = d;
return(n);
}