function template

std::find_if

template 
   
    
   InputIterator find_if (InputIterator first, InputIterator last, UnaryPredicate pred);

Find element in range Returns an iterator to the first element in the range [first,last) for which pred returns true. If no such element is found, the function returns last.
返回范围内第一个符合要求的元素的迭代器，如果没有，则返回last.

#include 
   
    
#include 
    
      #include 
     
       #include 
      
        using namespace std; void findif() { vector
       





         v1{1,2,3,4,5,6,3,4,9,8}; array
        
          ai{77,88}; cout<
         
          运行截图：
           The behavior of this function template is equivalent to:
          
           
           
            
             ?

STL algorithm算法find_if(19)

std::find_if