#include <stdio.h>

main()
{
	double a;
	a = 0.123456789012345678901234567890;

	printf("値をそのまま表示\n");
	printf("%f",a);
	printf("\n");
	
	printf("----+----1----+----2----+----3\n");
	printf("%30.0f\n",a);
	printf("%30.1f\n",a);
	printf("%30.2f\n",a);
	printf("%30.3f\n",a);
	printf("%30.4f\n",a);
	printf("%30.5f\n",a);
	printf("%30.6f\n",a);
	printf("%30.7f\n",a);
	printf("%30.8f\n",a);
	printf("%30.9f\n",a);
	printf("%30.10f\n",a);
	printf("%30.11f\n",a);
	printf("%30.12f\n",a);
	printf("%30.13f\n",a);
	printf("%30.14f\n",a);
	printf("%30.15f\n",a);
	printf("%30.16f\n",a);
	printf("%30.17f\n",a);
	printf("%30.18f\n",a);
	printf("%30.19f\n",a);
	printf("%30.20f\n",a);
	printf("\n");
	printf("\n");
}