C++ Loops

Besides for, while and do...while, C++ has the range-based for loop that walks through a container.

ExampleC++

#include <iostream>
#include <vector>
using namespace std;

int main() {
  for (int i = 1; i <= 3; i++) cout << "for " << i << endl;

  int n = 3;
  while (n > 0) {
    cout << "while " << n << endl;
    n--;
  }

  vector<string> cars = {"Volvo", "BMW", "Ford"};
  for (const string &car : cars) {
    cout << car << endl;
  }
  return 0;
}

Output

for 1
for 2
for 3
while 3
while 2
while 1
Volvo
BMW
Ford

Quick check

Which loop walks through every element of a container?

range-based fordo...whilegoto

Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.

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