In the above C++ program to check whether the number is positive, negative or zero, We are using if condition since any number that is more than 0 will be positive and less than 0 will be negative.
#include <iostream>
using namespace std;
int main()
{
signed long num1 = 0;
cout << "\n\n Check whether a number is positive, negative or zero :\n";
cout << "-----------------------------------------------------------\n";
cout << " Enter a number : ";
cin >> num1;
if(num1 > 0)
{
cout << " The entered number is positive.\n\n";
}
else if(num1 < 0)
{
cout << " The entered number is negative.\n\n";
}
else
{
std::cout << " The number is zero.\n\n";
}
return 0;
}
Sample Output: Enter a number : 34 The entered number is positive.