1. Write a C++ program to read an integer number. If the number is greater than zero, then display it as positive; otherwise display it as negative. 3. Write a C++ program to read an integer number. Display if the number is ODD or EVEN. 5. Write a C++ program to read four resistors' values, in ohms, which are connected in series. Compute total resistor, and display it. "RTotal-R1 + R2 + R3 + R4',3