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/* pizza.c -- uses defined constants in a pizza context */ #include #define PI 3.14159 int main(void) { float area, circum, radius; printf("What is the radius of your pizza?\

function[gsrv1,gsrv2]=gngauss(m,sgma) if nargin==0, m=0;sgma=1; elseif nargin==1, sgma=m;m=0; end; u=rand; z=sgma*(sqrt(2*log(1/(1-u)))); u=rand; gsrv1=m+z*cos(2*pi*u); gsrv2=m+z*sin

function[gsrv1,gsrv2]=gngauss(m,sgma) if nargin==0, m=0;sgma=1; elseif nargin==1, sgma=m;m=0; end; u=rand; z=sgma*(sqrt(2*log(1/(1-u)))); u=rand; gsrv1=m+z*cos(2*pi*u); gsrv2=m

/* 范例：4-7 */ #include #include void main() { char name[20]; char sex; int age; float pi; printf("请输入您的姓名："); scanf("%s",name); /* #1 */ printf("请输入您的性别(

function [Xk]=dft(xn,N) %计算离散傅立叶变换 %Xk为在0

clear N=100; n=0:N-1; xn=cos(0.5*pi*n)+sin(0.6*pi*n); Xk=dft(xn,N) subplot(2,1,1) plot(n,xn) ylabel('x(n)') subplot(2,1,2) k=0:length(abs(Xk))-1; plot(k,abs(Xk)); ylabel('|X(k)|')

% demoSubplot Demonstration of subplot with four sine functions x = linspace(0,2*pi); subplot(2,2,1); plot(x,sin(x)); axis([0 2*pi -1.5 1.5]); title('sin(x)'); subplot(2,2,2); plot(x,s

fs=100; %采样频率 fc=15; %载波频率 t=0:0.025:2; %采样时间 x=sin([pi*t',2*pi*t']); %信号 y = amod(x, fc, fs,'qam'); %正交幅度调制 z = ademod(y, fc, fs, 'qam');%正交幅度解调 plot(t,x,'-',t,z,'.') %绘制调

N=2^3; %以3比特传输信道 t=[0:100]*pi/20; u=cos(t); [p,c]=lloyds(u,N); [index,quant,distor]=quantiz(u,p,c); plot(t,u,t,quant,'*'); quant=c(index+1)

% Script to demonstrate equality of two floating point numbers x = tan(pi/6); y = sin(pi/6)/cos(pi/6); if x==y fprintf('x and y are equal\n'); else fprintf('x and y are not equal: x = %e