ToaDo

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

struct ToaDo
{
    float x;
    float y;
};

float tinhKhoangCach ( ToaDo A, ToaDo B)
{
    float result = sqrt( (A.x - B.x) * (A.x - B.x) + (A.y - B.y) * (A.y - B.y));
    return result;
}

void NhapToaDo( ToaDo & A)
{
    printf("Hoanh do: ");
    scanf("%f", &A.x);

    printf("Tung do: ");
    scanf("%f", &A.y);
}

void inputArrayPoint( ToaDo* A, int n)//n la so phan tu cua mang
{
    for ( unsigned int i = 0; i < n; i++)
    {
        printf("Nhap diem thu %d: \n", i);
        NhapToaDo(A[i]);
    }
}

ToaDo distanceToO( ToaDo *A, int n)//n la so phan tu cua mang ToaDo A
{
    ToaDo O;
    O.x = 0;
    O.y = 0;
    float Min = tinhKhoangCach(A[0], O);
    ToaDo TDMin;
    TDMin = A[0];
    for ( unsigned int i = 1; i < n; i++)
    {
        float temp = tinhKhoangCach(A[i], O);
        if ( Min > temp)
        {
            Min = temp;
            TDMin = A[i];
        }
    }

    return TDMin;
}

void main()
{
    ToaDo A[100];
    int n;
    printf("Nhap so phan tu mang toa do: ");
    scanf( "%d", &n);
    inputArrayPoint(A, n);

    ToaDo X = distanceToO(A,n);

    printf("\nDiem gan O nhat la: (%.2f , %.2f)", X.x, X.y);
}