C language - synthesis of large batches of .bin files

Combining large batches of .bin files with C language

Let me share with you a code for synthesizing bin files (I used it to make 0.96-inch OLED playback animation)

The buffer array changes itself according to the number of bytes in the file

#include<stdio.h>
#include<stdlib.h>

#define PICTURE_NUM   1314

int main(void)
{
    
    
    int i = 0;
    char buffer[1024] = {
    
     0 };
    char path[32] = "F:\\batch\\0000.bin";
    FILE *fp1 = NULL, *fp2 = NULL;
    fp2 = fopen("F:\\cai.bin", "wb");


    if(fp2 == NULL)
    {
    
    
        fprintf(stderr, "Error!");
        exit(EXIT_FAILURE);
    }

    for( i = 0 ; i < PICTURE_NUM ; i++)        //连续复制粘贴
    {
    
    
        path[9] = i / 1000 + '0';              //为0000的最高位
        path[10] = (i / 100) % 10 + '0';
        path[11] = (i / 10) % 10 + '0';
        path[12] = i % 10 + '0';

        fp1 = fopen(path, "rb");
        if(NULL == fp1)
        {
    
    
            fprintf(stderr, "Error Open %s\n", path);
            exit(EXIT_FAILURE);
        }
        if(i % 100 == 0)
            printf("%d\n", i);

        fread(buffer, 1, 1024, fp1);     //读取bin文件数据，相当于复制内容
        fwrite(buffer, 1, 1024, fp2);    //写入bin文件数据，相当于粘贴内容
        fclose(fp1);

    }
    fclose(fp2);
    return 0;
}