Sieve of Eratosthenes C++ code

Sieve of Eratosthenes C++ code

For the first time, I have developed a C++ application that compiles and runs flawlessly. I’ve made the decision to learn C++, and in order to become comfortable with the language, I’ve developed my first C++ program, which I wrote all by myself after only a few hours of instruction. (Also, no “Hello, World.” program has been written by me.

Example:1

#include<iostream>
using namespace std;
void primeSieve(int n)
{
int prime[100]={0};
for(int i=2;i<=n;i++)
{
if(prime[i]==0){
for(int j=i*i;j<=n;j+=i){
prime[i]==1;
}
}
}
for(int i=2;i<=n;i++)
{
if(prime[i]==0)
{
cout<<i<<" ";
  }cout<<endl;
}
}
int main()
{
int a;
cin>>a;
primeSieve(a);
}

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