Barra de vida

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

void life_bar(int life, int max_life)
{
    int full_life;
    full_life = (int) (20 * life/max_life);
    int i;
    if (full_life == 0)
        printf("[-");
    else
    {
        printf("[");
        for (i = 0; i < full_life; i++)
            printf("=");
        printf("-");
    }
    for (i = 0; i < 19 - full_life; i++)
        printf(" ");
    printf("]\n");
    return;
}

int main()
{
    int max_life;
    int life;
    for (life = 0; life <= max_life; life++)
    {
        printf("%d", life);
        life_bar(life, max_life);
    }
    return 0;
}