#include<stdio.h>
#include <time.h>

int fib(int n){
	if(n<1) return 1;
	return fib(n-1)+fib(n-2);
}
int main(){
	int x;
	clock_t t; double Etime;
	t = clock();
	//Do some Work
	x=fib(45);
	//
	t = clock() - t;
	Etime=((double)t)/CLOCKS_PER_SEC;
	printf("ETime =%f seconds",Etime);
		return 0;
}