输出文件//后的内容

#include <stdio.h>
#include <string.h>
int main()
{
    FILE *fp1,*fp2,*fp3;
    char filename[20],str[1000];
    char ch1,ch2,ch;
    //char s[1000];
    scanf("%s",filename);
    if((fp1=fopen(filename,"w+"))==NULL)
    {
        printf("error");
        exit(0);
    }
    ch=getchar();
    ch=getchar();
    while(ch!='#')
    {
        fputc(ch,fp1);
        ch=getchar();
    }
    fclose(fp1);
    if((fp2=fopen(filename,"r"))==NULL)
    {
        printf("error");
        exit(0);
    }
    while(!feof(fp2))
    {
        ch1=fgetc(fp2);

        ch2=fgetc(fp2);
        if(ch1=='/'&&ch2=='/')
        {
            while(ch=fgetc(fp2)!=EOF)
            {
                putchar((char)ch);
            }
        }
    }
    return;
}