C++ using function as parameter

Question

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How do you pass a function as a parameter in C?

Suppose I have a function called

Answer 1

Another way to do it is using the functional library.

std::function

Here reads an example, where we would use funct2 inside funct:

#include 
using namespace std;
#include 
void funct2(int a) {cout << "hello " << a << endl ;}

void funct(int a, function func) {func(a);}

int main() {
    funct(3,funct2);
    return 0;}

output : hello 3