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; int n,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; int n; 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]+2...
