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Jul 22nd, 2017
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  1. void umkehr(FILE *datei1){
  2. char c='x';
  3. int i=0;
  4. char zwischenstring[200+1];
  5. while(!feof(datei1)){
  6. c=fgetc(datei1);
  7. zwischenstring[i]=c;
  8. if((c>='A')&&(c<='Z'))zwischenstring[i]=c+32;
  9. if((c>='a')&&(c<='z'))zwischenstring[i]=c-32;
  10. i++;
  11. }
  12. zwischenstring[i+1]=0;
  13. fprintf(datei1, "%s", zwischenstring);
  14. fclose(datei1);
  15. }
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