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

int main(int argc,char **argv){
         FILE *fp;
         char c;
         int inTag=0;

         if(argc == 1)
                fp = stdin;
         else if (argc == 2)
                fp = fopen(argv[1],"r");
         else{ 
         	fprintf(stderr,"Usage:%s <file>\n",argv[1]);
                exit(1);
         }
         while((c = fgetc(fp))!=EOF){
                 if(c == '<'){
                         inTag = 1;
                         continue;
                 }
                 if(c == '>'){
                         inTag = 0;
                         continue;

                 }
                 if(!inTag)
                         fputc(c, stdout);
         }  
//		 fputc('\n' , stdout) ;
		 fflush(stdout);
         fclose(fp);
         return(0);
}