?? rect_pol.c
字號:
/* rect_pol.c -- converts rectangular coordinates to polar */
#include <stdio.h>
#include <math.h>
#define RAD_TO_DEG (180/(4 * atan(1)))
typedef struct polar_v {
double magnitude;
double angle;
} POLAR_V;
typedef struct rect_v {
double x;
double y;
} RECT_V;
POLAR_V rect_to_polar(RECT_V);
int main(void)
{
RECT_V input;
POLAR_V result;
puts("Enter x,y coordinates; enter q to quit:");
while (scanf("%lf %lf", &input.x, &input.y) == 2)
{
result = rect_to_polar(input);
printf("magnitude = %0.2f, angle = %0.2f\n",
result.magnitude, result.angle);
}
puts("Bye.");
return 0;
}
POLAR_V rect_to_polar(RECT_V rv)
{
POLAR_V pv;
pv.magnitude = sqrt(rv.x * rv.x + rv.y * rv.y);
if (pv.magnitude == 0)
pv.angle = 0.0;
else
pv.angle = RAD_TO_DEG * atan2(rv.y, rv.x);
return pv;
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -