Ocorrencia

// apple xcode
// paulogp

/* ocorrencia: numero de vezes que um caracter aparece numa palavra */
#include <stdio.h>
#include <string.h>

int ocorrencia (char *the_input, char the_char);

int ocorrencia (char *the_input, char the_char)
{
    int i = 0;
    int the_counter = 0;

    for (i = the_counter = 0; the_input[i] != '\0'; i++)
    {
        if (the_input[i] == the_char)
        {
            the_counter++;
        }
    }

    return the_counter;
}

int main (int argc, const char * argv[])
{
    char the_input[21]; // max 20 digits + '\0'
    char the_char[2]; // char to search + '\0'
    int the_result;

    printf ("palavra: ");
    fgets (the_input, sizeof(the_input) + 1, stdin);

    printf ("letra: ");
    fgets (the_char, sizeof(the_char), stdin);

    the_result = ocorrencia (the_input, the_char[0]);
    printf ("%c aparece %i vezes\n", the_char[0], the_result);

    return 0;
}