a loop inside a variable

Question

how do I store a loop or function inside a variable?

For example...

What if I wanted to take this for loop with rand()

int main () {

for (int x = 0; x <= 10; x++) {
cout << 2+ (rand() % 8) << endl; }

}

store it inside a variable and print the variable?

Answer 1

You can store the whole thing as a string and print it. It won't loop for you though...

Answer 2

the closest thing i can think of is something like this:

https://code.sololearn.com/cdGoZJCwei1z/#cpp

further reading:
http://www.cprogramming.com/tutorial/function-pointers.html

Answer 3

What you want is a C++ lambda. You can create the loop inside a function (code block) and then assign that function to the lambda. Note that this requires you to use a C++11 or greater compiler.

lambda example:
auto func = [](){
for (int x = 0; x <= 10; x++) {
cout << 2+ (rand() % 8) << endl;
}
};

func(); calls the func lambda

Answer 4

Thank you guys