41 |
|
ungetc(c, fp); |
42 |
|
return(s); |
43 |
|
} |
44 |
– |
|
45 |
– |
|
46 |
– |
isint(s) /* check integer format */ |
47 |
– |
char *s; |
48 |
– |
{ |
49 |
– |
register char *cp = s; |
50 |
– |
|
51 |
– |
while (isspace(*cp)) |
52 |
– |
cp++; |
53 |
– |
if (*cp == '-' || *cp == '+') |
54 |
– |
cp++; |
55 |
– |
do |
56 |
– |
if (!isdigit(*cp)) |
57 |
– |
return(0); |
58 |
– |
while (*++cp); |
59 |
– |
return(1); |
60 |
– |
} |
61 |
– |
|
62 |
– |
|
63 |
– |
isflt(s) /* check float format */ |
64 |
– |
char *s; |
65 |
– |
{ |
66 |
– |
register char *cp = s; |
67 |
– |
|
68 |
– |
while (isspace(*cp)) |
69 |
– |
cp++; |
70 |
– |
if (*cp == '-' || *cp == '+') |
71 |
– |
cp++; |
72 |
– |
s = cp; |
73 |
– |
while (isdigit(*cp)) |
74 |
– |
cp++; |
75 |
– |
if (*cp == '.') { |
76 |
– |
cp++; s++; |
77 |
– |
while (isdigit(*cp)) |
78 |
– |
cp++; |
79 |
– |
} |
80 |
– |
if (cp == s) |
81 |
– |
return(0); |
82 |
– |
if (*cp == 'e' || *cp == 'E') |
83 |
– |
return(isint(cp+1)); |
84 |
– |
return(1); |
85 |
– |
} |