#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {
    unsigned char c;
    int v[256];
    int i;
    FILE *arq;

    if (argc != 2) {
        printf("Uso %s nome_arquivo\n", argv[0]);
        exit(1);
    }

    arq = fopen(argv[1], "r");
    if (arq == NULL) {
        printf("Erro na leitura do arquivo\n");
        exit(1);
    }
    for (i = 0; i < 256; ++i)
        v[i] = 0;

    while (fscanf(arq, "%c", &c) != EOF)
        v[(unsigned int)c]++;

    for (i = 0; i < 256; i++)
        if (v[i] > 0)
            printf("%d (%c) - %d\n", i, (char)i, v[i]);

    fclose(arq);
    return 0;
}