/**
 * addsub.h
 * header file contains function headers
 */
#ifndef ADDSUB_H         // set compiling condition to avoid redefinition
#define ADDSUB_H

/**
 * @param x - int value
 * @param y - int value
 * @return - sum of x and y, int value 
 */
int add(int x, int y);

/**
 * @param x - int value
 * @param y - int value
 * @return -  subtract y from x, int value 
 */     
int minus(int x, int y);

#endif