Error message

[David joh]

This error message pops up, im confoused
fatal error: iostream: No such file or directory
compilation terminated.

#include <iostream>

using namespace std;

int main()
{
    int mynumber;
    mynumber = 10;
    cout << mynumber << endl;
    return 0;
}

[Lim Boon Jye]

rebuild solution or else create a new project to try again?

[GaGoKoYa]

have u checked your source file extension? make sure it is .cpp and not .c