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

int main()
{
    float age1, age2, age3;
    float average;
    age1 = age2 = 4.0;

    printf("Enter your age\n");
    scanf("%f", &age3);

    average = (age1 + age2 + age3) / 3;
    printf("\nThe average age of the group is %f", average);

    return 0;
}