#include <stdio.h>
#include <math.h>

int main(void) {
	float a = 1.8;
	float x = -2;
	float delta = 0.5;
	float Y;
	for (;x =< 2; x = x + delta){

		if(x >= 1) {
			Y = log(x);
		} else if (-1 < x && x < 1) {
			Y = sqrt(pow(x, 2) + pow(a, 3))/a;
		} else if (x <= 1) {
			Y = exp(x);
		}
		printf("y=%f", Y);
	}
return 0;
}