namespace

#include using namespace std; int main() { double leashamt,collaramt,foodamt,totamt; cout<<"enter the amount spent for a leash : ";

error CS0246: The type or namespace name 'Slider' could not be found (are you missing a using directive or an assembly reference?)

dot net core 3.1 The type or namespace name 'TestClassAttribute' could not be found (are you missing a using directive or an assembly reference?)

[ WARN:0] global C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-nxx381if\opencv\modules\videoio\src\cap_msmf.cpp (435) `anonymous-namespace'

#include using namespace std; int main() { int n; cout << "enter an integer: "; cin >> n; if ( n % 2 == 0) cout << n << " is even."; else cout << n << " is odd."; return 0; }

django.core.exceptions.ImproperlyConfigured: Specifying a namespace in include() without providing an app_name is not supported. Set the app_name attribute in the included module, or pass a 2-tuple containing the list of patterns and app_name instead.

#include using namespace std; int main() { int a = 3; float b = 4.5; double c = 5.25; double sum; sum = a + b + c; cout << "The sum of a, b, and c is", sum << endl; return 0; }