|
使用C语言实现在屏幕上用“*”显示0-360度的余弦函数cos(x)曲线。
C语言2.0 [img]http://www.pc6.com/softview/SoftView_925.html 模拟法:
#include <stdio.h>#include <math.h>int main(void)...{ double i ; int j,k; for(i=1.0 ; i>=-0.4 ; i -=0.1) ...{ j = (int)(acos(i)*10) ; for(k=0 ; k< j ; k++) printf(\" \"); printf(\"*\"); for(; k < 62-j ; k++) printf(\" \"); printf(\"* \"); } printf(\"the acos: \"); for(i=1.0 ; i>= -1.0 ; i-=0.1) printf(\"%f->%f \",i,acos(i)); system(\"pause\"); return 0 ;}
利用余弦函数的特性(对称性)
#include <stdio.h>#include <math.h> int main(void) ...{ double i,k ; int j ; for(i=1.0 ; i>= -1.0 ; i-= 0.1 ) ...{ k = (int)(acos(i)*10) ; for(j=0 ; j<62 ; j++) ...{ if ( j == k || j == 62 - k) [Page] printf(\"*\"); else printf(\" \"); } printf(\" \"); } system(\"pause\"); return 0 ;}
NO.2
绘制正弦曲线
在屏幕上用“*”显示0-360度的余弦函数sin(x)曲线。
1.
/**//*sin() line.62 of line widthwww.bianceng.cn*/#include <stdio.h>#include <math.h>int main(void)...{ int j ,k,d,h; double i ; for(i=1.0 ; i> 0.0; i-=0.1) ...{ k = (int)(asin(i)*10) ; for(j=0; j< k ; j++) /**//*print the left */ printf(\" \"); printf(\"*\"); for( ; j< 31-k ; j++) printf(\" \"); printf(\"* \"); } for(i=0.0 ; i>= -1.0 ; i-= 0.1) [Page] ...{ k = (int)(asin(i)*10) ; for(j=0; j< k+33; j++) printf(\" \"); printf(\"*\"); for(; j< 62 - k ; j++) printf(\" \"); printf(\"* \"); } for(i=1.0 ; i>=-1.0 ; i-=0.1) printf(\"%lf->%lf \",i,asin(i)) ; system(\"pause\"); return 0 ;}
2.
#include <stdio.h>#include <math.h>int main(void)...{ int j,k ; double i ; for(i=1.0 ; i>= -1.0 ; i -= 0.1) ...{ k = (int)(asin(i)*10); printf(\"k=%d \",k); for(j= 0 ; j<= 62 ; j++) if ( j == k || j == 62 + k || j == 31-k ) /**//*利用对称性和周期性求解*/ printf(\"*\"); else printf(\" \"); printf(\" \"); } system(\"pause\"); return 0 ;} |
|