C Dinos

#include <stdio.h>
#include <string.h>

struct charact
{
    char ch;
    int sec;
};

typedef struct charact Char;
void letters(char name[50], Char chars[50]);
void report(Char chars[50]);

int main(void)
{
    char name[50];
    Char chars[50];
    scanf("%49s", name);
    letters(name, chars);
    report(chars);
    return 0;
}

void letters(char name[50], Char chars[50])
{
    size_t i, j;
    memset(chars, 0, 50 * sizeof(Char));
    for (i = 0; i < strlen(name); i++)
    {
        chars[i].ch = name[i];
        chars[i].sec = 0;
        for (j = i + 1; j < strlen(name); j++)
        {
            if (name[i] == name[j])
            {
                chars[i].sec = j - i;
                break;
            }
        }
    }
    return;
}

void report(Char t[50])
{
    int i;
    i = 0;
    while (t[i].ch != 0)
    {
        printf("%c: %d\n", t[i].ch, t[i].sec);
        i++;
    }
    return;
}