Question

我有这个任务，要求使用函数来计算两点的距离和斜率。问题是我真的不明白如何将单个函数用于两个单独的变量（必须以这种方式进行赋值）。在这种情况下，公式要求x1和x2，但我必须使用单个函数。所以我的问题是如何使用我的getX和getY函数提示x和y两次？基本上对第一个和第二个值使用单个函数。希望更有意义。

/*Include statements*/
#include <stdio.h>
#include <math.h>

/*Given Prototypes*/
double getX();
double getY();
double distance(double, double, double, double);
double slope(double, double, double, double);

// begin main
int main()
{
    // declare variables
       double x1;
       double x2;
       double y1;
       double y2;

// read in variables for points on a graph
       x1 = getX();
       y1 = getY();
       x2 = getX();
       y2 = getY();

// print out the distance between the points and the slope of the line
      printf("\n");
      printf("Distance between the points is %.2f \n", distance(x1, x2, y1, y2));
      printf("Slope of the line is %.2f \n\n", slope(x1, x2, y1, y2));
}

/* begin getX function */
double getX()
{
    double x;
    printf( "Please enter the value of x:");
    scanf("%lf", &x);
    return x;
}


/* begin getY function */
    double getY()
{
    double y;
    printf("Please enter the value of y:");
    scanf("%lf", &y);
    return y;
}

/* header for distance function */
    double distance(double x1, double y1, double x2, double y2)
{
    return sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
}


/* header for slope function */
    double slope(double x1, double y1, double x2, double y2)
{
    return (y2 - y1) / (x2 - x1);
}

Answer 1

你可以使用＆＃34; Struct＆＃34;在C中，这将定义新的数据类型，可以将两个或多个单独的值放在下面的代码中 - 如果您有任何问题，请代码在这里：

/ 包含声明 /

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

/*Given Prototypes*/
double getX();
double getY();
double distance(double, double, double, double);
double slope(double, double, double, double);

// begin main
int main()
{
    // declare variables
    double x1;
    double x2;
    double y1;
    double y2;

    // read in variables for points on a graph
    x1 = getX();
    y1 = getY();
    x2 = getX();
    y2 = getY();

    // print out the distance between the points and the slope of the line
    struct SlopDistance FinalValues;
    FinalValues = CalcuateValues(x1, y1, x2, y2);

    printf("\n");
    printf("Distance between the points is %.2f \n", FinalValues.Distance);
    printf("Slope of the line is %.2f \n\n", FinalValues.Distance);
}

/* begin getX function */
double getX()
{
    double x;
    printf("Please enter the value of x:");
    scanf_s("%lf", &x);
    return x;
}


/* begin getY function */
double getY()
{
    double y;
    printf("Please enter the value of y:");
    scanf_s("%lf", &y);
    return y;
}

/* header for distance function */
double distance(double x1, double y1, double x2, double y2)
{
    return sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
}


/* header for slope function */
double slope(double x1, double y1, double x2, double y2)
{
    return (y2 - y1) / (x2 - x1);
}

struct SlopDistance
{

    double Slope;
    double Distance
};

struct SlopDistance CalcuateValues(double x1, double y1, double x2, double y2)
{
    struct SlopDistance FinalValue;
    FinalValue.Distance = distance(x1, x2, y1, y2);
    FinalValue.Slope = slope(x1, x2, y1, y2);
    return FinalValue;
}

具有单一功能的两点的距离和斜率

1 个答案: