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周期矩形波的C语言代码

#include

#include

#include

#include

#define pi 3.1415926

#define E 2

#define T1 2

double function(double t);

double sum();

double draw();

double function(double t)

{

double x,s,w,m;

intn,k;

w=2*pi/T1;

s=0;

for(n=1;n<=200;n++)

{

k=pow(-1,n-1);

x=cos((2*n-1)*w*t)/(2*n-1)*k;

s=x+s;

}

m=s*2*E/pi;

return(m);

}

void check_initialize()

{

int driver,mode;

detectgraph(&driver,&mode);

initgraph(&driver,&mode,"..\\bgi");}

double sum()

{

double c,t,m,x[301],s[300];

int i,g,y,j;

x[0]=0;

for(i=1;i<=200;i++)

{ setcolor(5);

x[i]=x[i-1]+0.02;

c=x[i];

s[i]=function(c);

line(100*x[i-1]+20,-100*s[i-1]+300,100*x[i]+20,-100*s[i]+300);

}

return 0;

}

double draw()

{

int l,b[61],c[60];

b[0]=200;

setcolor(9);

line(10,300,600,300);

line(20,410,20,30);

setcolor(6);

line(15,35,20,30);

line(25,35,20,30);

line(595,295,600,300);

line(595,305,600,300);

for(l=1;l<=25;l++)

{

b[l]=b[l-1]+4;

c[l]=220;

putpixel(c[l],b[l],5);

}

outtextxy(10,25,"Y");

outtextxy(605,305,"X");

outtextxy(220,300,"2");

outtextxy(10,200,"1");

outtextxy(10,300,"0");

return 0;

}

void main()

{

check_initialize();

setbkcolor(15);

sum();

draw();

getch();

}

周期三角波C语言代码

#include

#include

#include

#include

#define pi 3.1415926

#define E 2

#define T1 2

double function(double t);

double sum();double draw();

double function(double t)

{

double x,s,w,m;

intn;

w=2*pi/T1;

s=0;

for(n=1;n<=200;n++)

{

x=cos((2*n-1)*w*t)/((2*n-1)*(2*n-1));

s=x+s;

}

m=s*4*E/(pi*pi)+E/2;

return(m);

}

void check_initialize()

{

int driver,mode;

detectgraph(&driver,&mode);

initgraph(&driver,&mode,"..\\bgi");}

double sum()

{

double c,t,m,x[301],s[300];

int i,g,y,j;

x[0]=0;

for(i=1;i<=200;i++)

{ setcolor(5);

x[i]=x[i-1]+0.02;

c=x[i];

s[i]=function(c);

line(100*x[i-1]+20,-100*s[i-1]+400,100*x[i]+20,-100*s[i]+400);

}

return 0;

}

double draw()

{

int l,b[61