#include

#include

int main(void)

{

// TODO: Prompt for start size

int start, end;

do

{

start = get_int("Start size: ");

}

while (start < 9);

// TODO: Prompt for end size

do

{

end = get_int("End size: ");

}

while (end <= start);

// TODO: Calculate number of years until we reach threshold

int years, born, died;

years = 0;

while (start < end) {

born = start / 3;

died = start / 4;

start = start + born - died;

years++;

}

// TODO: Print number of years

printf("Years: %i\n", years);

}