What is wrong whit this code(this code is for x^j)?

Question

#include <iostream>
using namespace std;

int main()
{
int x,j,i=1;
cin >> x;
cin>>j;
if(i<=j,i++) {
x*=2;
}
else {
cout<<"power is "<<x;
}
return 0;
}

Answer 1

Syntax error on if statement, there is nothing like if(i<=j, j++)

Answer 2

The if and onwards, its all wrong

for(;i<=j;i++)
{
x*=x;
}
cout<<"power is"<<x;

Answer 3

tnx my frinds