Amino acids in proteins are composed of atoms of oxygen, carbon, nitrogen, sulfu

Question

Amino acids in proteins are composed of atoms of oxygen, carbon, nitrogen, sulfur, and hydrogen with atomic weights as below:

Oxygen: 15.9994

Carbon: 12.011

Nitrogen: 14.00674

Sulfur: 32.066

Hydrogen: 1.00794

Write a program that asks user to enter chemical formula for an amino acid and outputs (displays) the molecular weight of that amino acid. For example: if alanine is entered as O2C3NH7 then the output must be:

The molecular weight of O2C3NH7 is : 89.09412

Hand calculation: O: 2*15.9994 + C: 3*12.011 + N: 1*14.00674 + H: 7*1.00794 = 89.09412

Write this as a user defined function.

You must incorporate error checking in the input and display if found. Also user must get to input correct data if an error occurs in the input.

Some of the type errors a user makes could be:

1. entering a letter that is not in the chemical composition

2. entering new line character before entering the data

3. entering data with a single quote (one to begin and one to end)

The errors may not be limited to the above and you may discover new ones. Regardless, you must consider which ones could be more likely to occur.

Explanation / Answer

take hint from below similar question

Given a cell array of chemical formulas, or a structure array of atomic representations,molweightcomputes a corresponding vector of molecular weights.

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