C :

#include<stdio.h>

int main()
{
	float a,b,c,d,e,f;
	scanf("%f%f",&a,&b);
	c=a+b;
	d=a-b;
	e=a*b;
	f=a/b;
	printf("%.2f+%.2f=%.2f\n",a,b,c);
	printf("%.2f-%.2f=%.2f\n",a,b,d);
	printf("%.2f*%.2f=%.2f\n",a,b,e);
	printf("%.2f/%.2f=%.2f\n",a,b,f);
	return 0;
}

C++ :

#include<stdio.h>

int main()
{
	float a,b,c;
	scanf("%f%f",&a,&b);
	c=a+b;
	printf("%.2f+%.2f=%.2f\n",a,b,c);
	c=a-b;
	printf("%.2f-%.2f=%.2f\n",a,b,c);
	c=a*b;
	printf("%.2f*%.2f=%.2f\n",a,b,c);
	c=a/b;
	printf("%.2f/%.2f=%.2f\n",a,b,c);
	return 0;
}

Pascal :

var a,b:real;
begin
  readln(b,a);
  writeln(b:0:2,'+',a:0:2,'=',b+a:0:2);
  writeln(b:0:2,'-',a:0:2,'=',b-a:0:2);
  writeln(b:0:2,'*',a:0:2,'=',b*a:0:2);
  writeln(b:0:2,'/',a:0:2,'=',b/a:0:2);
end.