Xcode profiler help

[vxk]

I am new to Xcode profiler , how can i see a simple memory leak difference
in the following 2 programs :

int main()
{
    int* pp =  new int[50000000];
    for(int i =0;i<50000000;i++){
        pp[i] = i;
    }
}

int main()
{
int* pp = new int[1];
pp[0] = 10;
}

because when ever i try to make both of these programs run , i get only 1.5kB of live bytes

Thanks!