编写一个程序，要求输入两个浮点数，然后打印出用二者的差值除以

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#include<stdio.h>
int main(void)
{
 float a,b;
 printf("Please input two floats:");
 while(scanf("%f%f",&a,&b) ==2 )
 {
 printf("(%.2f-%.2f) / (%.2f*%.2f) = %.2f\n",a,b,a,b,(a-b) / (a*b));
 printf("Please input two floats:");
 }
 printf("end\n");
 return(0);
}