txt文本分割器

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

int file_bytes(FILE *fp);//計算文本中字節個數

int main(int argc, char** argv)

{

    char infile_name[50], outfile_name[50];

    char *p_file_style = ".txt";

    char count;

    int infile_byte_count = 0, n = 0, outfile_byte_count =0;

    int i = 0, filename_length = 0;

   

    FILE *in_fp = NULL, *out_fp = NULL;

loop:   

    puts("請輸入你要分割的txt文件名：\n");

    puts("請把txt文件放到與此軟件當前目錄下，記住文件要加後綴，否則可能出錯!\n");

    scanf("%s", infile_name);

    filename_length = strlen(infile_name);

   

    in_fp = fopen(infile_name,"r");

    if(in_fp == NULL)

    {

        puts("文件打開失敗！請重試\n");

        goto loop;

    }

   

    puts("正在計算文件字節個數...\n");

    infile_byte_count = file_bytes(in_fp);

    fclose(in_fp);

    puts("計算完成...\n");

    puts("請輸入你要分割成幾個txt文件?\n");

    scanf("%d", &n);

   

    in_fp = fopen(infile_name, "r");

   

    if(in_fp == NULL)

    {

        puts("文件打開失敗！終止程序...\n");

        exit(0);

    }

   

    puts("分割文件中...\n");

    //分割文件開始

    char* p_count =NULL;

    for(; i < n; ++i)

    {

        //修改輸出文件名+統計文件

        strcpy(outfile_name, infile_name);

        count = (char)(i+'0');

        p_count = &count;

        strcat(outfile_name, p_count);

        strcat(outfile_name, p_file_style);

       

        out_fp = fopen(outfile_name,"w");

        if(out_fp == NULL)

        {

            puts("error!\n");

            exit(0);

        }

       

        char c;

       

        while(outfile_byte_count <= infile_byte_count/n )

        {

             c=fgetc(in_fp);

             outfile_byte_count++;

             fwrite(&c, sizeof(c), 1, out_fp);

        }

        outfile_byte_count = 0;

        fclose(out_fp);

    }

    fclose(in_fp);

    puts("文件分割完成!\n");

   

    return 0;

}

int file_bytes(FILE* fp)

{

    char c;

    int n = 0;

    while((c=fgetc(fp))!=EOF)

    {

       n++;

    }

    return n;

}