Modify the program to add a function to compute and display the total sales for all the concerts. Support your experimentation with screen captures of executing the new code.

C Code

The following is the C Code that will compile in execute in the online compilers.

// 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  

#define MAXN 100 // max characters in a group/concert name #define MAXG 50 // max concerts/groups #define MAXC 3 // max categories

char group [MAXG][MAXN]; int fans [MAXG][MAXC]; float prices [MAXC]; float sales [MAXG]; 

int count = 0;

void printArray () { printf ("%15s%5s%5s%5s%10s ", "Concert", "s1", "s2", "s3", "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 ", 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 

void switchRows (int m, int n) { char tc; 

 int ti; float v; // printf ("Switching %d with %d ", 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; 

Page 9 of 12

} // 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 ", MAXC); printf (" . to finish entries: "); 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 (" --- Sorted --- "); sortBySales (); 

 printArray (); printf("... bye ... "); return 0; 

}

Test Plan

To verify this program is working properly a variety of test cases should be used. The following is just one test case, which only tests a very few aspects of the program.

You should be thinking about other data sets to test other aspects of the program, and also create more realistic test sets.

Test Case	Input	Actual Output using repl.it user input in red:
1	123 a123 b331 c531 d335 e112 f943 g456 .	Enter ticket prices in each of 3 cateogories: 1 2 3 -- Enter group and fans in 3 categories . to finish entries: a123 b331 c531 d335 e112 f943 g456 . --- Sorted --- Concert s1 s2 s3 Sales ... bye ... Concert s1 s2 s3 Sales a123 14.00 b331 12.00 c531 14.00 d335 24.00 e112 9.00 f943 26.00 g456 32.00 e112 9.00 b331 12.00 c531 14.00 a123 14.00 d335 24.00 f943 26.00 g456 32.00