C++ simple coding homework

I need this done in 2 and a half hours. simple coding nothing too complex because the class just started
and I CANNOT use namespace
 DESCRIPTION
WARNING: You are only allowed to use code covered in class, HW, or in the textbook up to Chp 3. Students who wish to use more advanced code must currently have an “A” in the course and obtain permission from me via email before starting the project. ALSO, code must be your OWN. Ask for hints, but write your own code! All students who copy from each other or get the same code by working together will receive zeroes.
This program will help users calculate quantities needed for a recipe. All the user needs to input is the number of servings and the name of the bread they will be using. Your program does the rest.
Below is the default recipe for bread. You must start with this. Then, based on how many loaves the user wants, you have to do the necessary calculations to figure out the new quantities for each ingredient. 
Recipe: by bakers percentages

Starting water: 72%
rye flour: 10%
red wheat flour: 20%
King Arthur special patent flour 30%
Bread flour 40%
sourdough starter 20%

Normally after mixing the bread is allowed to rest

additional water 2.5%
salt 2%

Serving Units: In a home kitchen, consider the (ml or g) unit as indivisible. A person cannot calculate, for example, what half of an (ml) is. Also consider a loaf to be indivisible (Ex: You can’t have 7.5 loaves).
Bakers percentages are expressed in terms of total flour used. (By adding up the rye, red wheat and bread flour). For example making two loaves of bread is generally 1000g total flour. So rye at 10% would be 100g.
INPUT: You will need to first get the name of the bread, then the number of loaves desired.
OUTPUT:
NAME: “Name of the bread”           NUMBER: “number of loaves”
INGREDIENTS: