Question

Question 4: write a program uses for loop to print numbers 1 to 20

Question 5: write a program uses for loop that print only the even numbers between 1 and 20, that is, 2 4 6 8 10 12 14 16 18 20

Answer 1

//Question 4
#include <iostream>
using namespace std;
int main()
{
	//Question 4
	//use for loop print 1 ..20
	cout << "================use for loop print [1..20]=====================\n";
	cout << "\t\t";
	for (int i = 1; i <=20; i++)
		cout << i << " ";
	cout << "\n===============================================================\n";
	return 0;
}
//Question 5
#include <iostream>
using namespace std;
int main()
{
	//Question 4
	//use for loop print even number 1 ..20 [2,4,6.....20]
	cout << "================use for loop print [1..20]=====================\n";
	cout << "\t\t";
	for (int i = 2; i <=20; i+=2)
		cout << i << " ";
	cout << "\n===============================================================\n";
	return 0;
}