#pragma once

typedef struct contract {
	unsigned int n; /* duration of the loan */
	unsigned int k; /* current year */
	unsigned int d; /* delay period of the loan */
	float r; /* interest rate */
	float P; /* part of the pricipal left at year k */
	float I; /* the interest for year k */
	float D; /* part of the capital reinbursed on year k */
	float A; /* annuity for year k */
} contract;