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Program a population without infection; only one person gets the disease in this exercise, the program...

Program a population without infection; only one person gets the disease in this exercise, the program ends when no one in the population has the disease.

• Write the Population class. The constructor takes the number of people:

Population population(npeople);

• Write a method that infects one random person:

population.random_infection();

• Write a method count_infected that counts how many people are infected.

• Write an update method that updates all persons in the population.

• Loop the update method until no people are infected: the Population::update method should apply Person::update to all person in the population.

Write a routine that displays the state of the popular, using for instance: ? for susceptible, + for infected, - for recovered.

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