Try using different inputs: a. What changes would you suggest to handle

larger, more realistic numbers? b. What happens if any of the numbers, such as the ticket prices, are negative? c. What are your recommendations concerning negative input values?

// C code
// This code will compute the values of the sales ticket sales for concerts
// and sort the entries by those values
// Developer: Faculty CMIS102
// Date: Jan 31, XXXX

#include <stdio.h>

#define MAXN 100 // max characters in a group/concert name
#define MAXG 50 // max concerts/groups

// ********* macro MAXC modified from 3 to 4 **************
#define MAXC 4 // max categories
// ********************************************************

char group [MAXG][MAXN];
int fans [MAXG][MAXC];
float prices [MAXC];
float sales [MAXG];
float total_sales = 0;
int count = 0;

void printArray () {

// ******** added %5s space and corresponding s4 to the the display table column names ***********
printf (“%15s%5s%5s%5s%5s%10s\n”,
“Concert”, “s1”, “s2”, “s3”, “s4”, “Sales”);
//*******************************************************************

for (int i = 0; i < count; i++) {
printf (“%15s”, group [i]);
for (int j = 0; j < MAXC; j++) {
printf (“%5d”, fans[i][j]);
} // end for each category
printf (“%10.2f\n”, sales [i]);
} // end for each group
} // end function printArray

void computeSales () {
for (int i = 0; i < count; i++) {
sales [i] = 0;
for (int j = 0; j < MAXC; j++) {
sales [i] += prices [j] * fans [i][j];
} // end for each category
} // end for each group
} // end function computeSales

// **************FUNCTION ADDED ******************
void computeTotalSales () {
for (int i = 0; i < count; i++) {
total_sales+=sales[i];
}//end for each group

}
// *************8*******************************

void switchRows (int m, int n) {
char tc;
int ti;
float v;
// printf (“Switching %d with %d\n”, m, n);
for (int i = 0; i < MAXN; i++) {
tc = group [m][i];
group [m][i] = group [n][i];
group [n][i] = tc;
} // end for each character in a group name
for (int i = 0; i < MAXC; i++) {
ti = fans [m][i];
fans [m][i] = fans [n][i];
fans [n][i] = ti;
} // end for each fan category
v = sales [m];
sales [m] = sales [n];
sales [n] = v;
} // end switch

int findMinSales (int m) {
float min = sales [m];
int target = m;
for (int i = m+1; i < count; i++)
if (sales [i] < min) {
min = sales [i];
target = i;
} // end new max found
return target;
} // end function findMinSales

void sortBySales () {
int target;
for (int i = 0; i < count; i++) {
target = findMinSales (i);
if (target > i)
switchRows (i, target);
} // for each concert
} // end function sortBySales

void getData () {
// for (int i = 0; i < MAXG; i++) sales [i] = 0;
printf (“Enter ticket prices in each of %d cateogories: “, MAXC);
for (int i = 0; i < MAXC; i++)
scanf (“%f”, &prices [i]);
printf (“– Enter group and fans in %d categories\n”, MAXC);
printf (” . to finish entries:\n”);
for (int i = 0; i < MAXG; i++) {
scanf (“%s”, &group[i]);
if (group [i][0] == ‘.’)
break;
count++;
for (int j = 0; j < MAXC; j++)
scanf (“%d”, &fans[i][j]);
} // end for each group
} // end function getData

int main(void) {
getData ();
computeSales ();
printArray ();
printf (“\n — Sorted —\n”);
sortBySales ();
printArray ();

//********* calling function to compute total sales ,
// **********then display the total sales *******************
computeTotalSales ();
printf(“Total sales: %10.2f\n”,total_sales);
// *************************************************************

printf(“… bye …\n”);
return 0;
}

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