35.c

中北大学c语言讲课课件

#include "math.h"  /  *为使用正弦、余弦函数做准备*/
#define  PI  3.1415926  
main()
{float x1,y1,x2,y2,len,angle;
 printf("input the start point:\n");   /*输入起点、线长、角度*/
 scanf("%f%f",&x1,&y1); printf("input the length:\n");
 scanf("%f",&len);
 printf("input the angle:\n");
 scanf("%f",&angle);
 x2=x1+len*cos(angle*PI/180);   /*求终点坐标*/
 y2=y1+len*sin(angle*PI/180);
 printf("the end position is %6.0f  %6.0f\n",x2,y2);
}