C :

#include<stdio.h>

int main()
{
	float a,b,c;
	a=5.14;
	b=3.4;
	c=a-b;
	printf("%.2f\n",c);
	return 0;
}

C++ :

#include<stdio.h>

int main()
{
	float a,b,c;
	a=5.14;
	b=3.4;
	c=a-b;
	printf("%.2f\n",c);
	return 0;
}