圆计算公式问题，初学者问，多指教

[Cslack2008]

#include <stdio.h>

int main(void)
{
float radius=0.0f;
float diameter=0.0f;
float cirumference=0.0f;
float area=0.0f;
float pi=3.14159f;

printf("Input the diameter of the table:");
scanf("%f",&diameter);
radius=diameter/2.0f;
cirumference=2.0f*pi*radius;
area=pi*radius*radius;


printf("\nThe cirumference is %f.2f",cirumference);
printf("\nThe area is %f.2f\n",area);

return 0;
}
一个圆面积问题，在最后输出时%.2f已指定最后结果只输出2位小数，例如输入12，可实际输出的是圆周为37.699081.2f 圆面积为113.097244.2f 这是正确的结果吗？

[waizqfor]

printf("\nThe cirumference is %2f",cirumference);
printf("\nThe area is %2f\n",area);

[xiaoyuer5222]

printf("\nThe cirumference is %f.2f",cirumference);
printf("\nThe area is %f.2f\n",area); 
格式符错了
printf("\nThe cirumference is %.2f",cirumference);
printf("\nThe area is %.2f\n",area);