Древнейшая наука изучающая законы и формы мышления рассуждений и доказательств?

Это наука Логика

#include <iostream>
using namespace std;
int main()
{
cout <<"4,4"<<endl;cout <<"4,5"<<endl;cout <<"4,6"<<endl;cout <<"4,7"<<endl;cout <<"4,8"<<endl;cout <<"4,9"<<endl;cout <<"5,0"<<endl;cout <<"5,1"<<endl;cout <<"5,2"<<endl;cout <<"5,3"<<endl;cout <<"5,4"<<endl;cout <<"5,5"<<endl;cout <<"5,6"<<endl;cout <<"5,7"<<endl;cout <<"5,8"<<endl;cout <<"5,9"<<endl;cout <<"6,0"<<endl;cout <<"6,1"<<endl;cout <<"6,2"<<endl;cout <<"6,3"<<endl;cout <<"6,4"<<endl;
}

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

void main() 
{
int n,sum=0; 
float y,k=0; 
cin >> n; 
int *mass = new int[n]; 
for (int i = 0;i < n;++i) 
{
cin >> mass[i]; 
} 
for (int i = 0;i < n;++i) 
{ 
if (mass[i] >0 )
{
k++;
y=pow(mass[i],2); 
cout<<y;
sum+=mas[i]
}
} 
system("pause"); 
}

2)#include <iostream>
#include <cmath>
using namespace std;

void main() 
{
int s,p,r,day=0;
cin >> s>>p>>r;
float km=s;
while(r>km)
{
km+=km*p/100;
day++;
}
cout << " km = " << km << " day = " << day << endl;
system ("pause");
}