This example illustrates using an array to

process a set of test scores.

I need help on how i could set up the following functions:

printScores findMinScore findMaxScore calculateAverage calcStdDev

Help would be much appreciated!

#include

#include

#include

#define MAX_TESTS 100

void printScores(int t[MAX_TESTS], int n);

int readTestsFromFile(char *fileName, int t[MAX_TESTS]);

float calcAverage(int t[MAX_TESTS], int n);

float calcStdDev(int t[MAX_TESTS], int n);

int findMaxScore(int t[MAX_TESTS], int n);

int findMinScore(int t[MAX_TESTS], int n);

void bubbleSort(int A[MAX_TESTS], int n);

int fillTestArray(int t[MAX_TESTS]);

int main()

{

int test[MAX_TESTS] = { 0};

int n = 0;//actual number of tests

float average;

n = readTestsFromFile("test_scores.txt", test);

//n = fillTestArray( test);

printf("%d tests read in. ", n);

printScores(test, n);

average = calcAverage(test, n);

printf("avg = %.2f ", average);

printf("standard deviation = %0.2f ", calcStdDev(test, n));

printf("maximum score = %d ", findMaxScore(test, n));

printf("minimum score = %d ", findMinScore(test, n));

printScores(test, 10);

bubbleSort(test,10);

printf("after sort ");

printScores(test, 10);

return 0;

}//main

/*

This function was written by Kevin Lee

it works, do not change!!!!

*/

int readTestsFromFile(char *fileName, int t[MAX_TESTS])

{

int count = 0;

int value;

FILE *filePtr;

filePtr = fopen(fileName, "r");

if( filePtr == NULL)

{

printf("Unable to find the data file ");

return 0;

}

do{

fscanf(filePtr, "%d", &value);

if(value > -1){

t[count] = value;

++count;

}

}while(value > -1 && count < MAX_TESTS);

return count;

}

float calcAverage(int t[MAX_TESTS], int n)

{

float average = 0;

float sum = 0;

printf("calcAverage under construction ");

return sum;

}

float calcStdDev(int t[MAX_TESTS], int n)

{

return 0;

}

void printScores(int t[MAX_TESTS], int n)

{

int i;

for(i = 0; i < n; ++i){

printf("%3d", t[i]);

}

printf(" ");

}

int findMaxScore(int t[MAX_TESTS], int n)

{

int i, max = -1;

max = t[0];

for(i = 1; i < n; ++i){

if (t[i] > max){

max = t[i];

}

}

return max;

}

int findMinScore(int t[MAX_TESTS], int n)

{

int min = -1;

printf("findMinScore under construction ");

return min;

}

void bubbleSort(int A[MAX_TESTS], int n)

{

int i, j, temp;

for(i= 0; i < n-1; ++i){

//inner for loop

for(j = 0; j < n-1; ++j ){

if(A[j] > A[j+1]){

//swap

temp = A[j+1];

A[j+1] = A[j];

A[j] = temp;

}

}//for j

printScores(A,n);

}//for i

}

int fillTestArray(int t[MAX_TESTS])

{

int data[MAX_TESTS] = {25,

40, 36, 26, 36, 33, 33, 34, 39, 4, 35,

38, 29, 33, 30, 41, 29, 40, 39, 39, 35,

38, 38, 28, 30, 28, 24, 16,-1};

int n = 0;

while(data[n] != -1){

t[n] = data[n];

n++;

}

return n;

}