Code not working(only 2 getting printed)

#1

#include
#define ll long long int
using namespace std;

void primesieve(int p)
{ ll i,j;
for(i=3;i<=1000005;i=i+2)
{
p[i]=1;
}
for(i=3;i<=1000005;i=i+2)
{ if(p[i]==1)
{
for(j=ii;j<=1000005;j=j+i)
{
p[i]=0;
}

   }
}
p[2]=1;

}

int main()
{

int p[1000005]={0};
primesieve§;
int i;

for(i=0;i<=100;i++)
{
if(p[i]==1)
cout<<i<<endl;
}

}

#2

for(j=i *i;j<=1000005;j=j+i)
{

p[i]=0; this line is wrong
it should be p[j] = 0
}

#3

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