Question

What is the output of the following function and function call?

void calculateCost(int count, float* subTotal, float taxCost);

float tax = 0.0,
subtotal = 0.0;

calculateCost(15, subtotal, tax);
printf("The cost for 15 items is ");

void calculateCost(int count, float* subTotal, float taxCost)

if( count < 10)

*subTotal = count * 0.50;

else

*subTotal = count * 0.20;

taxCost = 0.1 * *subTotal;
1) The cost for item is 3.00, and the tax for 3.00 is 0.30
2) The cost for item is 3.00, and the tax for 3.00 is 0.00
3) The cost for item is 0.00, and the tax for 3.00 is 0.00
4) The cost for item is 0.00, and the tax for 3.00 is 0.30

Answer 1

The calculateCost function takes parameters count, subTotal, and taxCost and calculates the cost based on the count. The output of the given function call is 'The cost for 15 items is 3.00,' with a tax of 0.30.

Step-by-step explanation:

The function calculateCost takes three parameters: count, subTotal, and taxCost. It calculates the cost based on the count and assigns it to the subTotal pointer. If the count is less than 10, the cost is count multiplied by 0.50. Otherwise, the cost is count multiplied by 0.20. The taxCost is calculated as 0.1 multiplied by the value pointed to by subTotal. In the function call calculateCost(15, subtotal, tax), the count is 15, the subTotal is pointed to by the variable subtotal, and the taxCost is passed as a separate variable tax. The expected output is 'The cost for 15 items is 3.00,' with a tax of 0.30.