#include
int main(){
float x,y,a,b,c,d;
printf("input x and y: ");
scanf("%f%f",&x,&y);
a=x+y;
b=x-y;
c=x*y;
d=x/y;
printf("%.2f+%.2f=%.2f\n",x,y,a);
printf("%.2f-%.2f=%.2f\n",x,y,b);
printf("%.2f*%.2f=%.2f\n",x,y,c);
printf("%.2f/%.2f=%.2f\n",x,y,d);
return 0;
}