Q. Which of the following C++ code will give error on compilation?

================code 1=================
#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
cout<<"Hello World";
return 0;
}
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================code 2=================
#include <iostream>
int main(int argc, char const *argv[])
{
std::cout<<"Hello World";
return 0;
}
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