【C语言】文本文件操作习题

test.data 内容 如下所示：

article_content	A	20.81	3.95
2	A	90.73	80.52
3	A	49.69	9.1
4	A	72.31	25.42
5	A	76.26	19.15
6	A	52.	75.29
7	A	0.82	17.81
8	A	94.56	91.81
9	A	97.82	73.66
10	A	24.91	9.07
11	A	61.61	70.25
12	A	68.9	66.75
13	A	71.28	56
14	A	67.52	96.85
15	A	95.39	95.5
16	A	69.99	45.72
17	A	77.44	28.27
18	A	94.21	6.06
19	A	6.19	36.55
20	A	55.8	51.17
21	A	5.97	82.13
22	A	41.72	.49
23	A	4.55	70.53
24	A	21.94	0.49
25	A	97.04	10.16
26	A	65.58	94.51
27	A	.19	23.49
28	A	73.53	50.56
29	A	35.05	23.98
30	A	9.24	93.69
31	A	41.59	75.46
32	A	30.03	80.75
33	A	49.16	6.93
34	A	97.85	72.55
35	A	23.6	88.5
36	A	85.62	61.27
37	A	17.86	73.73
1	B	43.84	92.14
2	B	19.01	96.59
3	B	93.26	49.6
4	B	58.55	59.71
5	B	56.31	39.75
6	B	25.22	72.79
7	B	37.	56.37
8	B	70.03	14.2
9	B	41.79	59.67
10	B	49.8	12.04
11	B	22.85	23.3
12	B	55.41	84.65
13	B	2.25	75.97
14	B	91.44	38.96
15	B	29.8	97.4
16	B	56.42	34.46
17	B	61.05	6.22
18	B	13.12	17.
19	B	98.93	4.65
20	B	27.32	57.21
21	B	30.55	76.05
22	B	35.72	48.97
23	B	93.32	.86
24	B	24.04	2.41
25	B	.11	58.55
26	B	41.45	4.5
27	B	20.01	75.25
28	B	60.46	20.
29	B	36.73	34.36
30	B	94.34	17.29
31	B	58.16	19.59
32	B	29.91	58.91
33	B	83.33	90.76
34	B	11.73	31.67
35	B	43.25	52.49
36	B	15.27	37.14
37	B	32.34	92.59
38	B	81.5	46.8
39	B	87.59	6.44
40	B	91.33	12.39
41	B	51.93	.04
42	B	74.85	71.25
43	B	55.96	51.92
44	B	14.45	85.81
45	B	45.75	92.58
46	B	80.82	.57
47	B	10.31	10.03
48	B	99.04	10.96
49	B	46.13	76.81
50	B	65.63	2.56
51	B	78.13	92.36
52	B	59.16	11.62
53	B	43.28	4.31
	B	72.15	27.42
55	B	93.75	13.66
56	B	32.95	30.29
57	B	43.03	81.95
58	B	65.36	69.13
59	B	44.74	58.66
60	B	2.95	31.41
61	B	76.31	25.92
62	B	85.92	50.67
63	B	71.67	50.7
	B	26.83	22.31
65	B	93.55	70.
66	B	0.67	10.78
67	B	40.81	88.77
68	B	34.26	59.57
69	B	29.88	63.23
70	B	27.97	51.65
71	B	79.77	87.03
72	B	92.06	32.09
73	B	59.63	50.53
74	B	21.	28.35
75	B	44.68	29.92
76	B	66.22	87.47
77	B	73.85	34.22
78	B	26.25	52.21
79	B	6.44	8.49
80	B	39.95	92.58
81	B	77.47	49.84
82	B	33.87	23.21
83	B	12.99	22.17
1	C	12.37	3.1
2	C	71.46	53.71
3	C	90.34	97.65
4	C	38.41	8.43
5	C	37.21	69.4
6	C	86.5	32.69
7	C	31.01	73.32
8	C	77.55	72.35
9	C	45.24	35.73
10	C	48.04	59.59
11	C	2.67	72.21
12	C	39.55	70.93
13	C	97.77	95.43
14	C	74.28	12.65
15	C	80.38	27.81
16	C	39.29	.42
17	C	98.91	53.34
18	C	15.62	1.3
19	C	82.76	94.21
20	C	71.6	53.72
21	C	23.83	78.62
22	C	39.67	60.68
23	C	13.55	99.18
24	C	57.	33.09
25	C	37.26	32.68
26	C	55.26	.26
27	C	13.1	3.39
28	C	51.46	40.16
29	C	63.	0.53
30	C	55.94	94.91
31	C	23.37	25.77
32	C	28.06	9.4
33	C	30.11	32.08
34	C	33.78	77.66
35	C	57.7	76.25
36	C	.58	51.03
37	C	.12	94.31
38	C	35.75	24.05
39	C	32.	78.87
40	C	57.38	98.59
41	C	37.	41.19
42	C	75.39	47.69
43	C	72.55	75.02
44	C	41.32	95.52
45	C	1.	75.46
46	C	37.75	82.23
47	C	38.28	76.69
48	C	30.36	98.07
49	C	50.56	30.26
50	C	30.57	81.47
51	C	65.4	79.87
52	C	75.39	61
53	C	43.1	4.23
	C	0.14	18.79
55	C	67.63	27.41
1	D	35.41	91.28
2	D	99.74	69.78
3	D	33.91	38.15
4	D	24.66	42.73
5	D	17.27	90
1	E	58.44	79.47
2	E	28.01	85.85
3	E	77.47	78.66
4	E	10.9	77.02
5	E	97.32	10.61
6	E	31.65	27.68
7	E	5.15	50.44
8	E	28.49	17.12
9	E	33.17	7.73
10	E	97.82	65.53
11	E	25.15	78.32
12	E	12.57	6.71
13	E	59.71	35.36
14	E	22.14	96.86
15	E	49.2	31.61
16	E	12.15	31.91
17	E	66.14	9.24
18	E	53.43	24.27
19	E	68.24	30.41
20	E	14.	65.79
21	E	73	66.44
22	E	27.66	49.
23	E	91.08	37.84
24	E	61.72	36.93
25	E	71.4	29.45
26	E	6.99	84.24
27	E	74.73	6.9
28	E	25.33	80.12
29	E	66.9	21.3
30	E	26.14	42.12
31	E	56.52	14.04
32	E	27.83	65.71
33	E	98.46	99.74
34	E	61.	95.91
35	E	97.01	4.22
36	E	48.87	2.76
37	E	93.09	32.03
38	E	92.53	58.7
39	E	50.66	62.93
40	E	15.63	21.87
41	E	73.63	85.21
42	E	25.46	19.75
43	E	24.62	27.91
44	E	57.18	59.24
45	E	83.9	73.32
46	E	57.37	46.94
47	E	4.27	72.52
48	E	9.27	58.96
49	E	38.62	61.95
50	E	51.18	91.34
51	E	76.3	65.81
1	F	81.47	67.65
2	F	56.29	1.92
3	F	21.04	19.16
4	F	97.14	11.32
5	F	77.38	31.21
6	F	4.23	25.18
7	F	42.22	
8	F	3.96	39.5
9	F	77.14	93.74
10	F	22.71	68.5
11	F	86.39	31.38
12	F	99.08	24.61
13	F	90.68	55.32
14	F	46.07	38.96
15	F	83.61	33.51
16	F	98.57	20.66
17	F	49.76	87.18
18	F	72.34	35.75
19	F	60.98	98.51
20	F	86.16	71.82
21	F	97.58	60.35
22	F	21.66	44.13
23	F	79.85	57.18
24	F	63.82	38.85
25	F	38.47	77.84
26	F	82.85	94.22
27	F	5.55	58.66
28	F	12.27	50.09
29	F	68.57	31.69
30	F	11.24	65.72
31	F	73.09	58.18
32	F	27.71	43.87
33	F	32.63	83.58
34	F	75.42	55.04
35	F	16.66	68.21
36	F	78.52	78.63
37	F	7.58	50.
38	F	70.93	26.03
39	F	9.72	.95
40	F	44.76	33.51
41	F	91.51	7.22
42	F	0.49	5.77
43	F	50.66	4.35
44	F	15.11	91.1
45	F	74.91	22.25
46	F	67.18	29.29
47	F	87.27	20.44
48	F	98.73	39.4
49	F	32.	77.79
50	F	11.49	96.27
51	F	81.76	8.78
52	F	22.19	70.26
53	F	99.32	4.22
	F	86.	.67
55	F	87.74	86.24
56	F	40.37	13.62
57	F	86.93	77.73
58	F	74.21	65.88
59	F	57.69	21.94
60	F	93.21	28.28
61	F	68.47	84.32
62	F	80.12	94.41
63	F	1.03	49.22
	F	91.36	87.14
65	F	52.16	31.53
66	F	93.39	31.93
67	F	43.46	48.49
68	F	51.75	82.72
69	F	85.03	30.23
70	F	6.46	46.44
71	F	17.71	60.44
72	F	3.36	88.68
73	F	81.87	53.56
74	F	42.37	9.
75	F	46.23	32.85
76	F	81.72	10.71
77	F	84.58	83.21
78	F	27.8	97.43
79	F	28.66	27.77
80	F	69.23	50.09
81	F	12.86	99.5
82	F	2.51	56.21
83	F	92.85	8.44
84	F	70.16	38.44
85	F	25.98	91.49
86	F	80.84	27.46
87	F	15.48	46.77
88	F	10.57	8.03
	F	80.96	91.45
90	F	12.	47.47
91	F	6.86	81.82
92	F	40.91	19.3
93	F	49.81	82.68
94	F	47.36	60.25
95	F	20.69	.31
96	F	.06	57.26
97	F	61	56.37
98	F	33.58	18.21
1	G	4.51	55.84
2	G	84.57	17.99
3	G	.61	59.66
4	G	83.38	45.61
5	G	57.44	51.81
6	G	76.81	22.67
7	G	79.29	27.56
8	G	79.43	61.
9	G	21.1	79.74
10	G	47.6	71.47
11	G	47.62	84.43
12	G	85.59	42.5
13	G	21.65	75.29
14	G	69.99	81.07
15	G	18.02	35.41
16	G	85	9.41
17	G	33.37	65.13
18	G	91.25	47.23
19	G	53.72	66.6
20	G	57.67	77.85
21	G	22.16	.26
22	G	15.65	38.61
23	G	68.61	76.51
24	G	65.91	40.77
25	G	5.	26.22
26	G	58.71	4.21
27	G	36.37	10.42
28	G	99.21	20.07
29	G	70.25	42.07
30	G	96.34	.32
31	G	.67	2.31
32	G	27.59	22.03
33	G	66.81	67.41
34	G	.3	14.16
35	G	36.31	32.19
36	G	8.16	.5
37	G	22.07	69.74
38	G	49.32	93.36
39	G	68.78	46.98
40	G	73.	45.14
41	G	9.38	29.23
42	G	75.52	91.8
43	G	76.7	80.8
44	G	73.04	22.95
45	G	65.92	71.18
46	G	76.99	11.65
47	G	70.27	68.36
48	G	88.19	19.85
1	H	96.07	.98
2	H	65.3	91.17
3	H	5.26	48.21
4	H	49.48	28.63
5	H	18.39	2.06
6	H	10.67	80.07
7	H	9.47	83.07
8	H	62.42	42.42
9	H	68.52	41.81
10	H	70.73	21.99
11	H	88.69	86.39
12	H	56.24	46.67
13	H	48.14	14.71
14	H	76.76	96.86
15	H	3.01	67.72
16	H	.3	18.11
17	H	.84	90.2
18	H	12.66	42.47
19	H	30.29	24.27
20	H	73.47	80.41
21	H	40.03	50.75
22	H	13.6	44.8
23	H	77.61	5.16
24	H	1.51	73.37
25	H	45.76	48.74
26	H	48.39	73.96
27	H	60.27	90.32
28	H	77.14	9.68
29	H	98.74	18.63
30	H	43.03	90.55
31	H	71.45	52.62
32	H	25.62	50.67
33	H	47.76	92.56
34	H	25.23	19.27
35	H	70.42	19.95
36	H	12.13	44.25
37	H	68.33	90.32
38	H	81.97	37.93
39	H	72.8	11.44
40	H	69.06	42.99
41	H	13.21	3.39
42	H	51.1	.27
43	H	19.33	80.34
44	H	57.83	.52
45	H	13.06	2.98
46	H	43.73	11.67
47	H	81.23	82.93
48	H	8.95	87.4
49	H	25.13	62.92
50	H	97.04	85.05
51	H	79.93	82.23
52	H	2.95	25.82
53	H	36.61	4.14
	H	5.63	69.95
55	H	8.35	39.2
56	H	36.88	87.3
57	H	49.57	0.05
58	H	77.34	68.06
59	H	1.53	71.35
60	H	31.35	67.42
61	H	34.73	60.7
62	H	6.21	67.43
63	H	76.22	0.46
	H	63.02	85.4
65	H	81.37	94.56
66	H	12.8	9.87
1	I	.6	65.95
2	I	17.75	48.29
3	I	2.34	96.26
4	I	29.35	77.35
5	I	99.29	31.71
6	I	71.94	39.98
7	I	2.59	0.03
8	I	69.93	0.57
9	I	71.96	17.87
10	I	68.97	69.
11	I	68.51	35.3
12	I	40.39	32.95
13	I	43.67	34.17
14	I	59.6	70.55
15	I	53.58	98.12
16	I	37.17	38.06
17	I	92.7	37.33
18	I	15.16	26.22
19	I	14.12	13.83
20	I	17.76	76.92
21	I	33.31	53.33
22	I	17.55	56.52
23	I	97.85	14.47
24	I	35.01	4.06
25	I	18.91	22.88
26	I	62.2	33.73
27	I	53.36	18.46
28	I	68.13	29.3
29	I	25.56	84.8
30	I	4.63	68.17
31	I	36.66	58.8
32	I	23.77	1.17
33	I	94.	33.88
34	I	47.28	65.26
35	I	84.86	43.71
36	I	86.45	58.13
37	I	0.11	92.04
38	I	36.22	15.18
1	J	87.	.13
2	J	46.02	.36
3	J	45.91	36.76
4	J	15.59	11.
5	J	79.35	52.32
6	J	44.52	37.47
7	J	39.66	38.58
8	J	45.4	22.96
9	J	15.93	3.87
10	J	93.86	72.51
11	J	29.75	88.36
12	J	26.9	50.84
13	J	74.	.14
14	J	83.53	12.65
15	J	88	0.02
16	J	23.6	26.81
17	J	76.31	15.27
18	J	34.07	37.71
19	J	6.86	81.93
20	J	.27	82.96
21	J	57.	47.24
22	J	11.55	51
23	J	86.61	33.81
24	J	37.1	5.97
25	J	85.98	71.26
26	J	38.06	43.71
27	J	84.18	70.22
28	J	55.07	99.28
29	J	27.24	95.18
30	J	.73	91.77
31	J	53.23	2.94
32	J	23.65	79.32
33	J	28.72	17.71
34	J	61.16	24.38
35	J	4.52	7.7
36	J	16.09	34
37	J	14.6	10.9
38	J	14.61	82.51
39	J	76.81	75.9
40	J	.23	40.83
41	J	17.04	77.56
42	J	26.67	16.74
43	J	61.96	79.
44	J	42.63	6.1
45	J	60.2	34.79
46	J	10.47	11.68
47	J	92.2	97.5
48	J	29.72	.96
49	J	23.59	32.22
50	J	22.28	68.9
51	J	72.65	12.72
52	J	1.46	78.29
53	J	55.17	4.06
	J	29.12	73.28
55	J	55.61	72.56
56	J	22.47	51.34
57	J	30.95	48.9
58	J	74.74	75.68
59	J	76.27	6.91
60	J	17.36	48.83
61	J	75.09	55.06
62	J	.18	69.73
63	J	97.23	4.41
	J	41.8	17.09
65	J	81.18	59.66
66	J	58.92	44.59
67	J	53.61	95.33
68	J	68.18	4.32
69	J	76.1	48.38
70	J	61.57	57.9
71	J	50.77	69.35
72	J	50.49	87.
73	J	12.32	59.13
74	J	80.74	43.3
75	J	22.77	.05
76	J	78.69	16.67
77	J	14.86	73.46
78	J	93.81	17.59
79	J	48.	31.73
80	J	81.06	50.76
81	J	62.26	12.02
82	J	92.1	95.95
83	J	13.	77.88
84	J	97.72	35.61
85	J	80.72	70.42