Why program does not enter else-cascade?

[Placebo]

Hi!

When the user-input is 0, it should imo enter the else-cascade and print out " 1 1" ?
But this does not happen - can anyone see why not?

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




int main() {
   int zahl, original, stellen = 0, s, umgekehrt = 0;
   printf("Bitte Zahl eingeben: ");
   
   scanf("%d", &zahl);
   original = zahl;


   if (original != 0) {
        for (stellen = 0; zahl > 0; stellen++) {
        s = zahl % 10;
        printf("%d\n", s);


        umgekehrt += s;
        umgekehrt *= 10;


        zahl /= 10;
    }
    umgekehrt /= 10;


   printf("Die Zahl %d hat %d Stellen.\n", original, stellen);
   printf("Die umgekehrte Zahl ist %d\n", umgekehrt);
} else {
    stellen = stellen + 1;
    printf("%d\t%d", stellen, stellen);
}
   
   return 0;
}

[laserlight]

Check the return value of scanf to ensure that it succeeded before continuing.

Use a debugger to check what's happening, as in where does control flow and what are the values of the variables. If you cannot use a debugger, insert debug print statements.

Indent your code properly: your indentation is inconsistent.

Declare your variables near first use, thereby limiting their scope.

[GReaper]

Are you sure it doesn't? Maybe the console window closes before you see it.

[Salem]

Better indentation would help.

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

int main()
{
  int zahl, original, stellen = 0, s, umgekehrt = 0;
  printf("Bitte Zahl eingeben: ");

  scanf("%d", &zahl);
  original = zahl;

  if (original != 0) {
    for (stellen = 0; zahl > 0; stellen++) {
      s = zahl % 10;
      printf("%d\n", s);
      umgekehrt += s;
      umgekehrt *= 10;
      zahl /= 10;
    }
    umgekehrt /= 10;
    printf("Die Zahl %d hat %d Stellen.\n", original, stellen);
    printf("Die umgekehrte Zahl ist %d\n", umgekehrt);
  } else {
    stellen = stellen + 1;
    printf("%d\t%d", stellen, stellen);
  }
  return 0;
}

Also, your printf in your else lacks a \n.
That may prevent you seeing the output until the moment the process exits.

[Placebo]

Hey, oh indeed now it works.
Thanks anyways for all the input and hints.