#include <stdio.h>
#define MAX 1000
int main()
{
     FILE *infile;
     FILE *outfile;
     char String[MAX];
     char ChangeStr[MAX]={' '};
     int i=0;
     int K=0;
     infile =fopen("yuan dai ma.txt","r");
     outfile =fopen("condensed_program","w");
     if(infile !=NULL && outfile !=NULL){
         while(fscanf(infile,"%c",&String[i])!=EOF&&i<MAX){
             if(String[i]!=' '){            
                 ChangeStr[K]=String[i];
                 K++;}
             i++;
         }
         fprintf(outfile,"%s",ChangeStr);
     }
      else
          printf("fopen unsuccessful!\n");
}