Question

如何用C++绘画sin(x)的图像

期望输出如下:

Answer 1

#include <iomanip>

#include <iostream>

using namespace std;

const double re[]={0,0.1736,0.342,0.5,0.6428,0.766,0.866,0.9397,0.9848,1};

const int Num[]={0,3,7,10,13,15,17,19,20,20};

const int space=20;

int flag=0;

int main(){

cout<<setiosflags(ios::fixed)<<setprecision(4);

for(int i=0;i<=180;i+=10){

for(int j=1;j<=space;++j)

cout<<' ';

cout<<'|';

for(int j=Num[flag];j>=1;--j)

cout<<'*';

for(int j=space;j>Num[flag];--j)

cout<<' ';

cout<<" sin "<<i<<" - +"<<re[flag];

cout<<endl;

i<90 ? ++flag : --flag;

}

flag=1;

for(int i=190;i<=360;i+=10){

for(int j=space;j>Num[flag];--j)

cout<<' ';

for(int j=Num[flag];j>=1;--j)

cout<<'*';

cout<<'|';

for(int j=1;j<=space;++j)

cout<<' ';

cout<<" sin "<<i<<" - "<<-re[flag];

cout<<endl;

i<270 ? ++flag : --flag;

}

cout<<endl;

return 0;

}