#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int square_1(int a); //call by value
int square_2(int *a);//vall by reference
void p14_1_1()
{
int a;
printf("수를 입력하세요\n");
scanf("%d", &a);
printf("%d\n", square_1(a));
printf("%d\n", a);
printf("%d\n", square_2(&a));
printf("%d\n", a);
return;
}
int square_1(int a)
{
int b = a * a;
return b;
}
int square_2(int *a)
{
int b= *a;
int c = b * b;
*a = c;
return *a;
}