2001

计算2点之间的距离

#include <stdio.h>
#include <math.h>
int mydistance(int a,int b,int c,int d);
int main()
{
    char buff[8];
    int buffer[4];
    while(gets(buff))
    {
        buffer[0] = buff[0] - '0';
        buffer[1] = buff[2] - '0';
        buffer[2] = buff[4] - '0';
        buffer[3] = buff[6] - '0';
        printf("%d
",mydistance(buffer[0],buffer[1],buffer[2],buffer[3]));
    }
    return 0;
}

int mydistance(int a,int b,int c,int d)
{
    int e;
    e = sqrt((c - a)*(c - a) + (d - b)*(d - b));
    return e;
}

参考c++

#include <cmath>
#include <cstdio>

int main(void)
{
    double x[2], y[2];

    while (scanf("%lf%lf%lf%lf", x, y, x+1, y+1) != EOF)
        printf("%.2f
", sqrt((x[1]-x[0])*(x[1]-x[0]) + (y[1]-y[0])*(y[1]-y[0])));

    return 0;
}