Question

in c++, create a struct named piggybank. this struct is meant to be hold the number of each US currency coins in the piggybank.Next, write a function that will take this struct and an integer value as argument and increment the coin in the struct depending on the integer value. If the value is not a valid US coin the function will return false. Do this without using any if/else statement.

Answer 1

SOURCE CODE IN C++:

#include <iostream>

using namespace std;

//struct to hold the number of each US currency coins in the piggybank

struct piggybank

{

int pennies, nickels, dimes, quarters, dollars;

piggybank()

{

pennies=0;

nickels=0;

dimes=0;

quarters=0;

dollars=0;

}

};

//Function that will take piggybank struct and an integer

//value as argument and increment the coin in the struct

//depending on the integer value

bool addCoin(piggybank &p, int coin)

{

//using switch case to find value and increment

switch(coin)

{

case 1:

p.pennies+=1;

return true;

case 5:

p.nickels+=1;

return true;

case 10:

p.dimes+=1;

return true;

case 25:

p.quarters+=1;

return true;

case 100:

p.dollars+=1;

return true;

default: //if it is not a valid value

return false;

}

}

int main()

{

//testing the function and struct

piggybank p;

addCoin(p,5);

addCoin(p,25);

addCoin(p,10);

addCoin(p,25);

addCoin(p,5);

addCoin(p,45); //since 45 is not valid, no change is seen

addCoin(p,5);

cout << "Coins in the piggybank:" << endl;

cout << "Pennies: " << p.pennies << endl;

cout << "Nickels: " << p.nickels<< endl;

cout << "Dimes: " << p.dimes << endl;

cout << "Quarters: " << p.quarters << endl;

cout << "Dollars: " << p.dollars << endl;

return 0;

}

OUTPUT: