cycki

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


int main(int argc, char ** argv)
{
    FILE * filer, * filew;
    int numr,numw;


    if((filer=fopen(argv[1],"rb"))==NULL){
        fprintf(stderr, "open read file error.\n");
        exit(1);
    }

    if((filew=fopen(argv[2],"wb"))==NULL){
        fprintf(stderr,"open write file error.\n");
        exit(1);
    }
    int temp=0;
    sscanf(argv[3],"%d", &temp);


    char *buffer;
    buffer = (char *) malloc(sizeof(char)*temp);






    while(feof(filer)==0){
    if((numr=fread(buffer,1,temp,filer))!=temp){
        if(ferror(filer)!=0){
        fprintf(stderr,"read file error.\n");
        exit(1);
        }
        else if(feof(filer)!=0);
    }
    if((numw=fwrite(buffer,1,numr,filew))!=numr){
        fprintf(stderr,"write file error.\n");
        exit(1);
    }
    }
   printf("%d", numr);
   printf("\n%d", numw);
    fclose(filer);
    fclose(filew);

   free(buffer);
    return 0;
}