The contribution of Charles Babbage in the history of computer
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Answer:
I am writing a C++ program. Let me know if you want the program in some other programming language. Here is the portion of the code:
if((userItem == GR_APPLES) || (userItem == GR_BANANAS)){
cout << "Fruit"; }
else if((userItem == GR_JUICE) || (userItem == GR_WATER)){
cout << "Drink"; }
else{
cout << "Unknown"; }
cout << endl;
Explanation:
The IF statement is used to check the defined options with the value in the userItem.
If the value of the userItem is GR_APPLES OR GR_BANANAS then Fruit is printed as the output. || represents a logical operator OR so this means that userItem can be either the GR_APPLES or GR_BANANAS for the If condition to evaluate to true.
If the above condition evaluates to false then the else-if part will be checked next. So the else if checks if the value in the userItem is GR_JUICE or GR_WATER. If userItem contains either of these two then Drink is displayed on the screen as output.
If the else-if statement also evaluates to false then the else part is executed which displays Unknown.
The cout<< endl; statement in the last is used to print the new line. For example if the output is Unknown then it is followed by a new line.
In the given program userItem is set to GR_APPLES
GroceryItem userItem = GR_APPLES
So the output of the whole program is Fruit followed by a new line.
The screenshot of the code along with the output is attached.
