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• Problem Description

  
  Latha and Trisha are friends. They love to play with words. Ishu gives them a task to replace each characters in a string with its previous letter. Can you help them to complete this task?

• CODING ARENA

• #include <stdio.h>

  #include <string.h>

  int main()

  {

    int a[100],i,l;

    char s1[100];

    scanf("%s",s1);

    l=strlen(s1);

    for(i=0;i<l;i++)

    {

      a[i]=s1[i];

      a[i]=a[i]-1;

      s1[i]=a[i];

    }

    printf("%s",s1);

  
  

  return 0;

  }

• Test Case 1

  
  Input (stdin)

  bcd
  
  

  Expected Output

  abc

• Test Case 2

  
  Input (stdin)

  bqqb
  
  

  Expected Output

  appa