1 #include <stdio.h>
2 /**
3 @author tz
4 @date 2019-04-11
5 */
6 void finishTask1(FILE* fptr);
7 void finishTask2(FILE* fptr);
8 void finishTask3(FILE* fptr);
9
10 int main() {
11 FILE* fptr = fopen("p1.txt", "r");
12 if(fptr==NULL)
13 exit(0);
14 printf("The result is:\n");
15 finishTask1(fptr);
16 rewind(fptr);
17 finishTask2(fptr);
18 rewind(fptr);
19 finishTask3(fptr);
20 rewind(fptr);
21 fclose(fptr);
22 }
23
24 //完成Task1,统计不同类字符数量
25 void finishTask1(FILE* fptr) {
26 printf("Task1:\n");
27 int capital = 0, lowercase = 0, digit = 0, other = 0;
28 int ch = fgetc(fptr);
29 while (ch != EOF) {
30 if (ch >= 'A'&&ch <= 'Z')
31 capital++;
32 else if (ch >= 'a'&&ch <= 'z')
33 lowercase++;
34 else if (ch >= '0'&&ch <= '9')
35 digit++;
36 else
37 other++;
38 ch = fgetc(fptr);
39 }
40
41 printf("capital:%d\n", capital);
42 printf("lowercase:%d\n", lowercase);
43 printf("digit:%d\n", digit);
44 printf("others:%d\n\n", other);
45 }
46
47 //统计行数，行最大长度，行最小长度
48 void finishTask2(FILE* fptr) {
49 printf("Task2:\n");
50 int ch = fgetc(fptr);
51 int totalLine = 0, maxLine = 0, minLine, curchars = 0, x = 0;//x用来判断是否是第一行
52 while (ch != EOF) {
53 while (ch != '\n') {
54 curchars++;
55 ch = fgetc(fptr);
56 if (ch == EOF)
57 break;
58 }
59 x++;
60 if (maxLine < curchars)
61 maxLine = curchars;
62 if (x == 1 || minLine > curchars)
63 minLine = curchars;
64 totalLine++;
65 curchars = 0;
66 ch = fgetc(fptr);
67 }
68 printf("line:%d\n", totalLine);
69 printf("%d characters in max line.\n", maxLine);
70 printf("%d characters in min line.\n\n", minLine);
71 }
72
73 //输出具体的大小写字母的统计信息
74 void finishTask3(FILE* fptr) {
75 printf("Task3:\n");
76 int ch = getc(fptr), cap[26] = { 0 }, Low[26] = {0};
77 int count = 0;
78 //统计大小写的个数，存放在数组中
79 while (ch != EOF) {
80 if (ch >= 'A'&&ch <= 'Z') {
81 cap[ch - 'A']++;
82 }
83 if (ch >= 'a'&&ch <= 'z') {
84 Low[ch - 'a']++;
85 }
86 ch = getc(fptr);
87 }
88 //依次输出
89 printf("CAPITAL:\n");
90 while (count != 26) {
91 if ((count + 1) % 4 == 0)
92 printf("%c:%d\n", 'A' + count, cap[count]);
93 else
94 printf("%c:%d ", 'A' + count, cap[count]);
95 count++;
96 }
97 printf("\n");
98 count = 0;
99 printf("LOWERCASE:\n");
100 while (count != 26) {
101 if ((count + 1) % 4 == 0)
102 printf("%c:%d\n", 'a' + count, Low[count]);
103 else
104 printf("%c:%d ", 'a' + count, Low[count]);
105 count++;
106 }
107 printf("\n");
108 }
