#include <stdio.h>

int main()
{
    double a = 123.456;
    printf("%a\n", a);
    printf("%e\n", a);
    printf("%f\n", a);
    printf("%g\n", a);
    printf("%la\n", a);
    printf("%le\n", a);
    printf("%lf\n", a);
    printf("%lg\n", a);
    return 0;
}