Question

Write a program and flowchart. The program should ask the user how many customers they want to track. Then, it asks for customer numbers, and sales by customer. At the end, it prints out the customer number, the customer sales, and then the total sales and average sales.

1. You must use two different arrays, one for customer number, and one for sales. These are, in effect, parallel arrays.  
2. You must use a "while" loop to gather customer number and sales.
3. You must use a"for" loop to output the customer number and sales by customer.
4. Program must be in C

Answer 1

Here is code:

#include <stdio.h>

int main()

{

int count = 0;

printf("Enter number of customers : ");

scanf("%d", &count);

int number[count];

float sales[count];

float total = 0, average;

int i = 0;

while (i < count)

{

printf("Enter number #%d : ", (i + 1));

scanf("%d", &number[i]);

printf("Enter sales #%d : ", (i + 1));

scanf("%f", &sales[i]);

total += sales[i];

i++;

}

average = total / count;

for (i = 0; i < count; i++)

{

printf("the number is %d\n", number[i]);

printf("the sales is %f\n\n", sales[i]);

}

printf("Total is : %f\n", total);

printf("Average is : %f\n", average);

return 0;

}

Output:

Enter number of customers:3 Enter number #1 : 1 Enter sales #1 : 123 Enter number #2 : 2 Enter sales #2 : 456 Enter number #3 : 3 Enter sales #3 : 789 the number is 1 the sales is 123.000000 the number is2 the sales is 456.000000 the number is 3 the sales is 789.000000 Total is 1368.000000 Average is 456.000e00

FlowChart:

int count-O read count declare int number[count] float sales[count] float total -0, average int i 0 i < count alse True average - total/count read number[i) i=0 read sales[i] total += sales i < count False True print number[il print total print sales[) print average