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  1. #include <stdio.h>
  2. #include <ctype.h>
  3. #include <string.h>
  4.  
  5. int main(void)
  6. {
  7.     char str[1024];
  8.  
  9.     while (fgets(str, sizeof(str), stdin) != 0)
  10.     {
  11.         int size = strlen(str);    
  12.         for (int i = 0; i < size; i++)
  13.         {
  14.             if (toupper((unsigned char)str[i]) == 'Z')
  15.             {
  16.                 str[i] = 'A';
  17.             }
  18.             else if (isalpha((unsigned char)str[i]))
  19.             {
  20.                 str[i] -= 1;
  21.             }
  22.             printf("%c", str[i]);
  23.         }
  24.     }
  25.  
  26.     return 0;
  27. }
Success #stdin #stdout 0s 2172KB
comments (?)
stdin
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BZ
stdout
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AA
https://ideone.com/Oh93oE
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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