lamdba表达式

 1 #include <iostream>
 2 #include <string>
 3 #include <vector>
 4 #include <algorithm>
 5 using namespace std;
 6 
14 int main(int argc, const char *argv[])
15 {
16     vector<int> vec;
17 
18     vec.push_back(99);
19     vec.push_back(87);
20     vec.push_back(59);
21     vec.push_back(43);
22     vec.push_back(78);
23     vec.push_back(91);
24 
25 
26     int cnt = 
27         std::count_if(vec.begin(), vec.end(), 
28                 [](int i){return i >= 80;});//lamdba表达式
29     cout << cnt << endl;
30 
31 
32     return 0;
33 }