企业官网建设流程全解析

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#include <iostream>

#include <cmath>

usingnamespacestd;

intmain ()

{

// 数字定义

shorts = 10;

inti = -1000;

longl = 100000;

floatf = 230.47;

doubled = 200.374;

// 数学运算

cout <<"sin(d) :"<<sin(d) << endl;

cout <<"abs(i) :"<<abs(i) << endl;

cout <<"floor(d) :"<<floor(d) << endl;

cout <<"sqrt(f) :"<<sqrt(f) << endl;

cout <<"pow( d, 2) :"<<pow(d, 2) << endl;

return0;

}

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#include <iostream>

#include <ctime>

#include <cstdlib>

usingnamespacestd;

srand( (unsigned)time( NULL ) );

for(inti = 0; i < 10; i++ )

{

// 生成实际的随机数

intj=rand();

cout <<"随机数： "<< j << endl;

}

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#include<iostream>

#include<iomanip>

usingnamespacestd;

intmain(){

doublex=3.1415926;

cout<<fixed<<setprecision(3)<<x<<endl;

return0;

}