#include<stdio.h>

/*
	return_type name(parameter list) {

	}
*/

int square(int x){
	return x*x;
}

int main(void){
	int answer = square(72);
	printf("Answer = %d\n", answer);



	answer = square(151); // Change answer, don't make a new variable
	printf("Answer = %d\n", answer);

	printf("Answer = %d\n", square(square(371)));

//	system(getenv("TODO"));

	
	int i = 2.0/3;
	printf("i = %d\n", i);

	printf("%f\n", 2.0/3);

	auto a = 4.0/3; // ONLY in C++, not in C
	printf("%f\n", a);

	auto f = square; // Again, c++ only
	printf("f(37)= %d\n", f(37));

	int (*f_cstyle)(int) = square;
	printf("f_cstyle(37)= %d\n", f_cstyle(37));

	return 7;
}