输入X，Y，Z三个数，判断最大值和最小值，并打印出最大值和最小值，用C＋＋怎样写（if语句）？谢了

Answer 1

#include<iostream.h>
const int num=3;
void main()
{
int a[num];
int i,j;
for(i=0;i<num,i++)
cin>>a[i];
int max;//定义存最大值
for(i=0;i<num-1;i++)//从大到小排序
{
max =i ;
for(j=i+1;j<num;j++)
{
if(a[j]>a[max])
max =j;
if(i !=max)
{
int tmp;
tmp =a[i];
a[i]=a[max];
a[max]=a[i];
}
}
cout<<"最大值："<<a[0]<<endl;
cout<<"最小值："<<a[num-1]<<endl;
}

随便多少数都能找到最大值和最小值，用排序就行，新手吧~！ 把常量num改成你想排序的数字个数就行~！

Answer 2

#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
int main()
{

int a;
vector<int>intvec;
intvec.reserve(3);
cout<<"输入3个数\n";
for(int i=0;i<3;++i)
{
cin>>a;
intvec.push_back(a);
}

cout<<"Max"<<*max_element(intvec.begin(),intvec.end())<<endl;
cout<<"Min"<<*min_element(intvec.begin(),intvec.end())<<endl;

}

Answer 3

int max,min;
max=y;
min=y;
if (x>=y) max=x;
if (z>=max) max=z;
if (x<=y) min=x;
if (z<=min) min=z;
print min,max

Answer 4

#include<iostream.h>
#define MAX(a,b,c) (c>(a>b?a:b)?c:(a>b?a:b))
#define MIN(a,b,c) (c<(a<b?a:b)?c:(a<b?a:b))
void main()
{
int max;
int min;
int a=b=c=0;

cin>>a>>",">>b>>",">>c;

max = MAX(a,b,c);
min = MIN(a,b,c);

cout<<("max=%d", max)<<endl;
cout<<("min=%d", min)<<endl;

}