Trying to display the prime numbers between 1 - 100

[BloodMoney]

Hello, I'm a beginner at C++ and am having some difficulty attempting to create a program for my C++ class that involves listing the prime numbers between 1 and 100.

I intend to have the numbers 1-100 listed, and cout statements to display which numbers are prime and which aren't. Such as this:

1 is prime
2 is prime
3 is prime
4 is not prime
5 is prime
6 is not prime
7 is prime
8 is not prime
9 is not prime
10 is not prime

etc.

or maybe you could help me put it into a more more efficient format?

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

int main()
{
	int i, j;
	bool isprime;

	for(i=1; i<100; i++){
	
		isprime= true;

		for(j=2; j<=i/2; j++);{
			
				if(i%j); == 0
					isprime = false;

			if(isprime)
				cout << " Is prime!";

			return 0;
	}
}
}

[BloodMoney]

I attempt to run it and get the error

Line 17: "Error 1 error C2146: syntax error : missing ')' before identifier 'isprime'

[youngcoder13]

I do not know how to make it more efficient, as in writing only one or two lines of code to display all numbers between 1-100 and if they are prime or not but I do have some advice. First, make a cout for if it is not prime. Secondly, when it says if(isprime)
cout << " Is prime!"; It should be cout << "Is prime: " << number (I think int i or j)