The following should be completed in C++:

Write a program that takes an operation followed by two operands and outputs the result. For example +100 3.14 *4 5 Read the operation into a string called operation and use an if-statement to figure out which operation the user wants, for example, if (operation = = "+"). Read the operands into variables of type double. Implement this for operations called +, -, *, /, plus, minus, mul, and div with their obvious meetings