C++ STL之min_element()与max_element（）（取容器中的最大最小值）可以用来找一个最大值和最小值；

 1 #include<iostream>  
 2 #include<algorithm>  
 3 using namespace std;  
 4 bool cmp(int a,int b)  
 5 {  
 6       return a<b;  
 7 }  
 8 int main()  
 9 {  
10       int num[]={2,3,1,6,4,5};  
11       cout<<"最小值是 "<<*min_element(num,num+6)<<endl;  
12       cout<<"最大值是 "<<*max_element(num,num+6)<<endl;  
13       cout<<"最小值是 "<<*min_element(num,num+6,cmp)<<endl;  
14       cout<<"最大值是 "<<*max_element(num,num+6,cmp)<<endl;  
15       return 0;   
16 }