#include <stdio.h>
 
int main(void) {
   char frase[30];
   int consoantes = 0;
 
   printf("Digite uma frase:");
   scanf("%[^\n]",frase);
 
   for (int i = 0; frase[i] != '\0'; i++){
   	   char c = frase[i];
   	   // se for maiúscula, converte para minúscula (excluí o "A", porque nesse caso nem precisa contabilizar)
   	   if ('B' <= c && c <= 'Z') c += 32;
   	   if ('b' <= c && c <= 'z') { // só testo se estiver neste intervalo
   	       switch(c) { // como já deixei o "a" de fora, não preciso mais testar aqui
   	       	   case 'e':
   	       	   case 'i':
   	       	   case 'o':
   	       	   case 'u':
   	       	       break; // se for vogal, não faz nada
   	       	   default:
   	       	       consoantes++;
   	       }
   	   }
   }
 
   printf("A quantidade de consoantes na frase '%s' é %d\n", frase, consoantes);
 
   return 0;
}
 

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