FILE *oldf,*newf; char ch,fname[20]; int i; do printf("Enter name of existed text file to be read:"); scanf("%s",fname); if((oldf=fopen(fname,"r"))==NULL) printf("File %s can't open!/n",fname); while(oldf==NULL); do printf("Enter mane of new text file to be written:"); scanf("%s",fname); if(( (1) ==NULL) printf("File %s can't open!/n",fname); while( (2) ); i=1; while(!feof(oldf))