新人真心求教...各位编程大大求顺手点进！ - 编程论坛

#2

lz10919149992012-10-20 18:01

这不难吧？把你的代码贴上来看看？

#3

青春无限2012-10-20 18:02

很简单

#4

IB_2012-10-20 19:25

回复 2楼 lz1091914999

老师都说很简单..但我不会/(ㄒoㄒ)/~~ 怎么也编不明白

#5

zxstrom2012-10-20 20:05

#include <iostream>
#include <cmath>
using namespace std;

void main()
{
    int r;
    float P=3.1415926;
    float S,L;//S代表面积，L代表周长。
    cout<<"请输入圆的半径谢谢：";
    cin>>r;
    cout<<"我费了好大的劲终于算出来了，我来告诉你，圆的面积：";
    cout<<"S="<<P*r*r<<endl;
    cout<<"圆的周长：";
    cout<<"L="<<2*P*r<<endl;
}//这是第一题。

#6

zxstrom2012-10-20 20:35

void Change(int *p,int *q)
{
int temp;
    temp=*p;
    *p=*q;
    *q=temp;
}
void Swap(int *a,int *b,int *c)
{
    Change(a,b);
    Change(b,c);

}

void main()
{
    int a,b,c;
    cout<<"现在可以输入你认可的3个数了，快点啦：";
    cin>>a>>b>>c;
    Swap(&a,&b,&c);
    cout<<"搞定了：";
    cout<<a<<" "<<b<<" "<<c<<endl;
}

#7

wuyushuai5212012-10-20 21:19

#include <iostream>
#include <cmath>
using namespace std;
#define pi 3.1415926
int main()
{
    double r;
    cout<<"Enter the radius of circle: ";
    cin>>r;
    cout<<endl;
    cout<<"The area of circle is: "<<pi*pow(r,2)<<endl;
    cout<<"The perimiter of circle is: "<<2*pi*r<<endl;

    return 0;
}

#8

wuyushuai5212012-10-20 21:23

#include <iostream>
using namespace std;
int main()
{
    int a,b,c,t;
    cout<<"Enter a,b,c: ";
    cin>>a>>b>>c;
    cout<<"The numbers you enter are: "<<a<<","<<b<<","<<c<<endl;
    t=a;
    a=b;
    b=c;
    c=t;
    cout<<"The numbers are: "<<endl;
    cout<<"a= "<<a<<endl;
    cout<<"b= "<<b<<endl;
    cout<<"c= "<<c<<endl;

    return 0;
}

#9

wuchunbing2012-10-20 21:40

5 6楼的是男是女有点搞笑哦要是男生就太有女人味了

#10

zxstrom2012-10-20 21:59

回复 9楼 wuchunbing

汗，彪悍男一个

#11

zhuanjia02012-10-21 10:34

弄个中间变量就行

#12

rossmonica2012-10-29 18:10

cout<<"Enter a,b,c: ";
改成Enter three numbers我觉得更恰当些