Prova MAC

program.c

#include <stdio.h>
#include <string.h>
const char grupos[10][5] = {"", "", "abc", "def", "ghi", "jkl",
                               "mno", "pqrs", "tuv", "wxyz"};
 
void  gerarPalavra(int number[], int curr_digit, char output[], int n)
{
    int i;
    if (curr_digit == n)
    {
        printf("%s ", output);
        return ;
    }
    for (i=0; i<strlen(grupos[number[curr_digit]]); i++)
    {
        output[curr_digit] = grupos[number[curr_digit]][i];
         gerarPalavra(number, curr_digit+1, output, n);
        if (number[curr_digit] == 0 || number[curr_digit] == 1)
            return;
    }
}
 
void imprimir(int number[], int n)
{
    char result[n+1];
    result[n] ='\0';
    gerarPalavra(number, 0, result, n);
}
int main(void)
{
    int number[] = {2, 3, 4};
    int n = sizeof(number)/sizeof(number[0]);
    imprimir(number, n);
    return 0;
}