C程序计算文件中的字符，行和单词数
文件是磁盘上的物理存储位置，目录是用于组织文件的逻辑路径。文件存在于目录中。
我们可以对文件执行的三个操作如下-
打开一个文件。
处理文件（读、写、修改）。
保存并关闭文件。
示例
考虑下面给出的例子-
以写入模式打开文件。
在文件中输入语句。
该输入文件内容如下-
Hi welcome to my world This is C programming tutorial From tutorials Point
该输出是如下-
Number of characters = 72Total words = 13Total lines = 3
程序
以下是计算文件中字符、行和单词数的C程序-
#include输出结果#include int main(){ FILE * file; char path[100]; char ch; int characters, words, lines; file=fopen("counting.txt","w"); printf("enter thetext.presscntrl Z:\n"); while((ch = getchar())!=EOF){ putc(ch,file); } fclose(file); printf("输入源文件路径： "); scanf("%s", path); file = fopen(path, "r"); if (file == NULL){ printf("\nUnable to open file.\n"); exit(EXIT_FAILURE); } characters = words = lines = 0; while ((ch = fgetc(file)) != EOF){ characters++; if (ch == '\n' || ch == '\0') lines++; if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\0') words++; } if (characters > 0){ words++; lines++; } printf("\n"); printf("Total characters = %d\n", characters); printf("Total words = %d\n", words); printf("Total lines = %d\n", lines); fclose(file); return 0; }
执行上述程序时，会产生以下结果-
enter thetext.presscntrl Z: Hi welcome to nhooo.com C programming Articles Best tutorial In the world Try to have look on it All The Best ^Z 输入源文件路径： counting.txt Total characters = 116 Total words = 23 Total lines = 6