C程序计算文件中的行数-yiteyi-C++库

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                     /* C Program to count the Number of Lines in a Text File  */                   
                     #include <stdio.h>                   
                     #define MAX_FILE_NAME 100                   
                             
                     int                               main()                   
                     {                   
                                         FILE                               *fp;                   
                                         int                               count = 0;                               // Line counter (result)                   
                                         char                               filename[MAX_FILE_NAME];                   
                                         char                               c;                               // To store a character read from file                   
                             
                                         // Get file name from user. The file should be                   
                                         // either in current folder or complete path should be provided                   
                                         printf                               (                               "Enter file name: "                               );                   
                                         scanf                               (                               "%s"                               , filename);                   
                             
                                         // Open the file                   
                                         fp =                               fopen                               (filename,                               "r"                               );                   
                             
                                         // Check if file exists                   
                                         if                               (fp == NULL)                   
                                         {                   
                                         printf                               (                               "Could not open file %s"                               , filename);                   
                                         return                               0;                   
                                         }                   
                             
                                         // Extract characters from file and store in character c                   
                                         for                               (c =                               getc                               (fp); c != EOF; c =                               getc                               (fp))                   
                                         if                               (c ==                               ''                               )                               // Increment count if this character is newline                   
                                         count = count + 1;                   
                             
                                         // Close the file                   
                                         fclose                               (fp);                   
                                         printf                               (                               "The file %s has %d lines "                               , filename, count);                   
                             
                                         return                               0;                   
                     }                   

输出：

Enter file name: countLines.c
The file countLines.c has 41 lines

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