Write a program with total change amount as an integer input, and output the change using the fewest coins, one coin type per li

Answer:

The following is the C code annotated with suitable comments.

Explanation:

#include<stdio.h>

//constants defined

#define DOLLAR 100

#define QUARTER 25

#define DIME 10

#define NICKEL 5

#define PENNIES 1

//method for converting

void ExactChange(int userTotal,int coinVals[])

{

//dollar calculation

if (userTotal >=100)

{

coinVals[0]=userTotal/DOLLAR;

userTotal=userTotal-(100*coinVals[0]);

}

//quarter analysis

if (userTotal >=25)

{

coinVals[1]=userTotal/QUARTER;

userTotal=userTotal-(25*coinVals[1] );

}

//dime check

if (userTotal >=10)

{

coinVals[2]=userTotal/DIME;

userTotal=userTotal-(10*coinVals[2]);

}

//nickel check

if (userTotal >=5)

{

coinVals[3]=userTotal/NICKEL;

userTotal=userTotal-(5*coinVals[3]);

}

//pennies check

if (userTotal >=1)

{

coinVals[4]=userTotal/PENNIES;

userTotal=userTotal-coinVals[4];

}

}

//main function

int main() {

//variables defined

int amount;

//requesting user input

printf("Enter the amount in cents:");

//input registration

scanf("%d",&amount);

//input validation

if(amount<1)

{

//output message

printf("No change..!");

}

//if the input is positive

else

{

int coinVals[5]={0,0,0,0,0};

ExactChange(amount,coinVals);

//checking for dollars

if (coinVals[0]>0)

{

//output for dollars

printf("%d Dollar",coinVals[0]);

if(coinVals[0]>1) printf("s");

}

//checking quarters

if (coinVals[1]>0)

{

//output for quarters

printf(" %d Quarter",coinVals[1]);

if(coinVals[1]>1) printf("s");

}

//checking dimes

if (coinVals[2]>0)

{

//output for dimes

printf(" %d Dime",coinVals[2]);

if(coinVals[2]>1) printf("s");

}

//checking nickels

if (coinVals[3]>0)

{

//printing nickels

printf(" %d Nickel",coinVals[3]);

if(coinVals[3]>1) printf("s");

}

//checking pennies

if (coinVals[4]>0)

{

//printing pennies

printf(" %d Penn",coinVals[4]);

if(coinVals[4]>1) printf("ies");

else printf("y");

}

}

//end of the main function

}