The debugger sees some of my commands as undeclared variables

See more:

C++

here is the code where im having the problem. the problem arises when i get to the commands cout and cin, where the debugger (and compiler, which is GNU) see the commands as undeclared variables. Please tell me the problem and solution. thanks.

#include (cstdio)
#include (cstdlib)
#include (iostream)
using namespace std;

int main(int nNumberofArgs, char* pszArgs[])
{
     int nNumber;
     int nNumber2;
     
     cout << "numero uno - " << endl;
     cin >> nNumber;
     
     cout << "nombre du - " << endl;
     cin >> nNumber2;
     
     cout << "the equation = \n" << endl;
     cout << (nNumber - nNumber2 * nNumber) + 5;
     cout << "\n" << endl;
     system("PAUSE");
     return 0;

}

[edit]Code block added - OriginalGriff[/edit]