用C实现 命令行的WordCount程序
/*
- 没能实现的功能:wc.exe -s递归处理目录下符合条件的文件
-
wc.exe -x 显示图形界面 - 实现的功能: wc.exe -c显示文件的字符数、
-
wc.exe -l行数、 -
wc.exe -w单词、 -
wc.exe -a空行数、代码行数、注释行数的统计测试
*` * */
#include"iostream" using namespace std; void CharCount(char path[]); //字符统计函数 void WordCount(char path[]); //单词统计函数 void LineCount(char path[]); //行数统计函数 void Muiltiple(char path[]); //综合统计函数，包括代码行，空行，注释行 int main() { char input[100],path[50]; gets(input); int count=strlen(input); strncpy(path, input + 10, count - 10); path[count - 9] = '\0'; //cout << path << endl; int check = 1; while (check) { int i = 7; if ((input[i] == '-') && (input[i + 1] == 'c')) { CharCount(path); break; } if ((input[i] == '-') && (input[i + 1] == 'w')) { WordCount(path); break; } if ((input[i] == '-') && (input[i + 1] == 'l')) { LineCount(path); break; } if ((input[i] == '-') && (input[i + 1] == 'a')) { Muiltiple(path); break; }//获取文件名 } system("pause"); return 0; } void CharCount(char path[]) //字符统计函数 { FILE *fp=NULL; int c = 0; char ch; cout << path<<endl; char *path3 = path; int k = strlen(path); *(path3 + k-1) = '\0'; //cout << path3<<endl; if ((fp = fopen(path3 , "r")) == NULL) { printf("file read failure."); exit(0); } ch = fgetc(fp); while (ch != EOF) { c++; ch = fgetc(fp); } cout << "char count is ：" << c << endl; c--; fclose(fp); }
void WordCount(char path[]) //单词统计函数 { FILE *fp; int w = 0; char ch; char *path3 = path; int k = strlen(path); *(path3 + k - 1) = '\0'; if ((fp = fopen(path3, "r")) == NULL) { printf("file read failure."); exit(0); } //fgetc()会返回读取到的字符，若返回EOF则表示到了文件尾，或出现了错误。 ch = fgetc(fp); while (ch != EOF) { if ((ch >= 'a'&&ch <= 'z') || (ch >= 'A'&&ch <= 'Z') || (ch >= '0'&&ch <= '9')) { while ((ch >= 'a'&&ch <= 'z') || (ch >= 'A'&&ch <= 'Z') || (ch >= '0'&&ch <= '9') || ch == '_') { ch = fgetc(fp); } w++; ch = fgetc(fp); } else { ch = fgetc(fp); } } printf("word count is ：%d.\n", w); fclose(fp);
}
void LineCount(char path[]) //行数统计函数 { FILE *fp; int l = 1; char ch; char *path3 = path; int k = strlen(path); *(path3 + k - 1) = '\0'; if ((fp = fopen(path3, "r")) == NULL) { printf("file read failure."); exit(0); } //fgetc()会返回读取到的字符，若返回EOF则表示到了文件尾，或出现了错误。 ch = fgetc(fp); while (ch != EOF) { if (ch == '\n') { l++; ch = fgetc(fp); } else { ch = fgetc(fp); } } l--; printf("line count is ：%d.\n", l); fclose(fp); }
void Muiltiple(char path[]) //综合统计函数，包括代码行，空行，注释行 { FILE *fp; char ch; char *path3 = path; int k = strlen(path); *(path3 + k - 1) = '\0'; int c = 0, e = 0, n = 0; if ((fp = fopen(path3, "r")) == NULL) { printf("file read failure."); exit(0); } //fgetc()会返回读取到的字符，若返回EOF则表示到了文件尾，或出现了错误。 ch = fgetc(fp); while (ch != EOF) { if (ch == '{' || ch == '}') { e++; ch = fgetc(fp); } else if (ch == '\n') { ch = fgetc(fp); while (ch == '\n') { e++; ch = fgetc(fp); } } else if (ch == '/') { ch = fgetc(fp); if (ch == '/') while (ch != '\n') { ch = fgetc(fp); } n++; ch = fgetc(fp); } else { c++; while (ch != '{'&&ch != '}'&&ch != '\n'&&ch != '/'&&ch != EOF) { ch = fgetc(fp); } }
}
printf("code line count is ：%d.\n", c);
printf("empt line count is ：%d.\n", e);
printf("note line count is ：%d.\n", n);
fclose(fp);
}