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a guest Oct 21st, 2019 80 Never
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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. void troca(char *string);
  5. void minuscula(char *string);
  6. int quantidade(char *string, char letra);
  7.  
  8. int main(void)
  9. {
  10.   char string[80];
  11.   gets(string);
  12.   minuscula(string);
  13.   troca(string);
  14.   puts(string);
  15. }
  16.  
  17. void troca(char *string)
  18. {
  19.   int qtd = strlen(string), i, j;
  20.   for (i = 0; i < qtd; i++)
  21.   {
  22.     if( *(string + i) == 'z')
  23.     {
  24.       *(string + i) = 'a';
  25.     }
  26.     else if(*(string + i) ==' ')
  27.     {
  28.       //não faz nada
  29.     }
  30.     else
  31.     {
  32.       *(string + i) += 1;
  33.     }
  34.   }
  35.   for(i = qtd - 1; i >= 0; i--)
  36.   {
  37.     if (quantidade(string, *(string + i)) > 0)
  38.     {
  39.       if (*(string + i) == 'z')
  40.       {
  41.         *(string + i) = 'a';
  42.       }
  43.       else if (*(string + i) == ' ')
  44.       {
  45.  
  46.       }
  47.       else
  48.       {
  49.         *(string + i) += 1;
  50.         i++;
  51.       }
  52.     }
  53.   }
  54. }
  55.  
  56. int quantidade(char *string, char letra)
  57. {
  58.   int cont = 0;
  59.   while(*string != '\0')
  60.   {
  61.     if(*string == letra)  cont++;
  62.     string++;
  63.   }
  64.   return cont - 1;
  65. }
  66.  
  67. void minuscula(char *string)
  68. {
  69.   while(*string != '\0')
  70.   {
  71.     if (*string >= 'A' && *string <= 'Z')
  72.     {
  73.       *string += 32;
  74.     }
  75.     string++;
  76.   }
  77. }
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