#include 

#include 

int main(void) 

{

	FILE *in  = fopen("sample.html", "r");

	FILE *out = fopen("sample.txt", "w");

	if(in==NULL||out==NULL){

		fprintf(stderr, "★ファイルを開けません");

		exit(EXIT_FAILURE);

	}



	char c;

	while((c=fgetc(in))!=EOF){

		if(c=='<'){

			c='[';

		}else if(c=='>'){

			c=']';

		}

		fputc(c, out);

	}



	fclose(in);

	fclose(out);

	

	return 0;

}