Question

How to use call a function inside for_each to increase all the numbers of a vector with C++

Answer 1

#include <algorithm>
#include <iostream>
#include <vector>
   
int main() {
    std::vector<int> vec = { 2, 4, 6, 8, 12, 18, 20, 24 };
    
    std::for_each(vec.begin(), vec.end(), [](int &num) { num++; });
      
    auto print = [](const int& num) { std::cout << num << ' '; };
 
    std::for_each(vec.cbegin(), vec.cend(), print);
}
      
      
        
       
/*
run:
       
3 5 7 9 13 19 21 25 
       
*/

 

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