Задача 1:
#include <iostream>
using namespace std;
int main()
{
int a{}, b{};
cout << "a = ";
cin >> a;
cout << endl << "b = ";
cin >> b;
if (a < b) a *= 2, b *= 3;
else b *= 2, a *= 3;
cout << endl << endl << "a = " << a << endl << "b = " << b;
return 0;
}
Задача 2:
#include <iostream>
using namespace std;
int main()
{
int a{};
cout << "a = ";
cin >> a;
if (!(a % 2)) cout << endl << a * a; //if (!(a % 2)) = теж саме, що й if (a % 2 == 0)
else cout << endl << a * a * a;
return 0;
}
Задача 3:
#include <iostream>
using namespace std;
int main()
{
int sum{};
for (int i = 11; i < 100; i += 2) sum += i;
cout << sum;
return 0;
}
Задача 4:
#include <iostream>
using namespace std;
int main()
{
for (int i = 144; i < 1000; i += 48) cout << i << " ";
return 0;
}
#include <iostream>
using namespace std;
int main()
{
float a;
cin>>a;
int sum = 0 ,b = a*100;
while (b > 0)
{
sum+=b%10;
b=b/10;
}
cout<<"sum = "<<sum;
return 0;
}