#include<stdio.h>
#include<string.h>

int main(){
        char filename[FILENAME_MAX];
        char buffer;
        FILE*fp;

        strcpy(filename,"/dev/stdin");
        if((fp = fopen(filename,"r")) == NULL){
                printf("ファイル%sが見つかりません。\n",filename);
                return(-1);
        }

        while((buffer = fgetc(fp))!=EOF){
                printf("%c",buffer);
        }
        fclose(fp);
}