这里使用​​int fputc(int ch, FILE *fp)​​​ 和 ​​int fgetc(FILE *fp)​​ 进行文本文件的读取和复制。

#define _CRT_SECURE_NO_WARNINGS 

#include<stdio.h>

int fbcopy(FILE *fpdest, FILE *fpsrc);

int main(void) 
{
    FILE *fpdest = NULL, *fpsrc = NULL;

    int sum_num = fbcopy(fpdest, fpsrc);

    if (sum_num != -1) {
        printf("总字节数目为:%d\n", sum_num);
    } else {
        printf("操作失败!!%d\n", sum_num);
    }

    return 0;
}

int fbcopy(FILE *fpdest, FILE *fpsrc) 
{
    char get_char;
    int sum_num = 0;

    fpsrc = fopen("fuck.dat", "rb");
    if (fpsrc == 0) {
        printf("打开文件失败!!!!");
        return -1;
    }

    fpdest = fopen("copy_success.txt", "wb");
    if (fpdest == 0) {
        printf("打开文件失败!!!!");
        return -1;
    }

    while ((get_char = fgetc(fpsrc)) != EOF) {     
        fputc(get_char, fpdest);
        sum_num++;
    } 
  
    fclose(fpsrc);
    fclose(fpdest);
    return sum_num;
}