#include
doublemul(floatfac,floatmult);
intmain(void)
{
doubleproduct;
floatnum1,num2;
printf("entertwonumber");
while(scanf("%f%f",&num1,&num2)==2)
{
product=mul(num1,num2);
printf("product=%lf\n",product);
printf("entertwonumber");
}
printf("entererr");
return0;
}
doublemul(floatfac,floatmult)
{
return((fac*mult));
}
