#include<stdio.h>
#include<stdlib.h>
char *date( char *str,int m);
int main(int argc,char *argv[])
{
    FILE  *f,*fp;
    int part=104857600,i,j;
    void *tmps;

  
     
    if((f=fopen("test.txt","rb+"))==NULL)
    {
        printf("can't open this file");
        exit(1);
    }
    tmps=(char *)malloc(part);
    {
    for(i=1;i<=100;i++)
    {
      
        if((fp=fopen(date(argv[1],i),"wb+"))==NULL)
        {
            printf("error");
            exit(2);
        }
        for(j=0;j<1024;j++)
        {
            fread(tmps,sizeof(char),1024,f);
            fwrite(tmps,sizeof(char),1024,fp);
        }
        fclose(fp);
    }
    }
   
    fclose(f);
    return 0;
}

谢谢了，我改了，不过貌似不是这个问题