Hi I wrote this C program but I keep getting these four errors: Severity Code De

Question

Hi I wrote this C program but I keep getting these four errors:

Severity   Code   Description   Project   File   Line
Error   LNK1120   3 unresolved externals   Stats Lab   C:UsersMokodocumentsisual studio 2015ProjectsStats LabDebugStats Lab.exe   1
Warning   C4129   '%': unrecognized character escape sequence   Stats Lab   c:usersmokodocumentsisual studio 2015projectsstats labstats labstats.c   69
Error   LNK2019   unresolved external symbol _printTestScores referenced in function _main   Stats Lab   C:UsersMokodocumentsisual studio 2015ProjectsStats LabStats Labstats.obj   1
Error   LNK2019   unresolved external symbol _printTestScoresInAscendingOrder referenced in function _main   Stats Lab   C:UsersMokodocumentsisual studio 2015ProjectsStats LabStats Labstats.obj   1
Error   LNK2019   unresolved external symbol _printTestScoresAndFrequency referenced in function _main   Stats Lab   C:UsersMokodocumentsisual studio 2015ProjectsStats LabStats Labstats.obj   1

CODE:

#include <stdio.h>
#include <stdlib.h>
// Stats Lab

void sort(int testScores[], int numberOfScores);
void printTestScores(int testScores[], int numberOfScores);
void printTestScoresInAscendingOrder(int testScores[], int numberOfScores);
void printTestScoresAndFrequency(int testScores[], int numberOfScores);
void printPercentagePassingFailingGrades(int testScores[], int numberOfScores);
void printMeanModeMedianTestScores(int testScores[], int numberOfScores);

double greatestFrequencyScore = 0;

int main(void) {
   int numberOfScores = 30;
   int testScores[] = { 90, 85, 100, 50, 50, 85, 60, 70, 55, 55, 80, 95, 70, 60, 95, 80, 100, 75, 70, 95, 90, 90, 70, 95, 50, 65, 85, 95, 100, 65 };

   printTestScores(testScores, numberOfScores);
   printTestScoresInAscendingOrder(testScores, numberOfScores);
   printTestScoresAndFrequency(testScores, numberOfScores);
   printPercentagePassingFailingGrades(testScores, numberOfScores);
   printMeanModeMedianTestScores(testScores, numberOfScores);

   getchar(); getchar();
   printf("    Value          Frequency ");

   int i, j;

   i = 0;
   j = 0;

   int frequency[30];
   double scores[30];

   int index = 0;
   for (i = 0; i <= numberOfScores - 1; i++)
   {
       frequency[i] = 0;
       scores[j] = 0;

   }

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

       for (j = 0; j < index; j++) {
           if (testScores[i] == scores[j]) {
               frequency[j] = frequency[j] + 1;
               break;
           }
       }

       if (j == index) {
           frequency[index] = frequency[j] + 1;
           scores[index] = testScores[i];
           index++;
       }

   }

   greatestFrequencyScore = 0;

   int freq = 0;
   for (j = 0; j < index; j++) {
       printf("%8.2f           %d ", scores[j], frequency[j]);
       if (frequency[j] > freq) {
           freq = frequency[j];
           greatestFrequencyScore = scores[j];
       }

   }
   printf(" ");
}

void printPercentagePassingFailingGrades(int testScores[], int numberOfScores)
{
   double passingTestScores = 0;
   double failingTestScores = 0;
   int i;

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

       if (testScores[i] >= 60)
           passingTestScores++;
       else if (testScores[i] < 60)
           failingTestScores++;
   }

   printf("Percentage of passing scores = %.2f ", (passingTestScores * 100 / numberOfScores));
   printf("Percentage of failing scores = %.2f ", (failingTestScores * 100 / numberOfScores));
   printf(" ");
}

void printMeanModeMedianTestScores(int testScores[], int numberOfScores) {

   int i;
   double sumOfScores = 0;
   for (i = 0; i <= numberOfScores - 1; i++) {

       sumOfScores = sumOfScores + testScores[i];
   }

   double averageOfTwoMiddleNumbers = 0;

   if (numberOfScores % 2 == 0)
       averageOfTwoMiddleNumbers = (double)(testScores[numberOfScores / 2] + testScores[numberOfScores / 2 + 1]) / 2.0;

   printf("Mean of test scores = %.2f ", sumOfScores / numberOfScores);

   printf("Mode of test scores = %.2f ", greatestFrequencyScore);

   printf("Median of test scores = %.2f ", averageOfTwoMiddleNumbers);
   printf(" ");

}

If anyone could help me fix these errors that would be awesome

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>
// Stats Lab

void sort(int testScores[], int numberOfScores);
void printTestScores(int testScores[], int numberOfScores);
void printTestScoresInAscendingOrder(int testScores[], int numberOfScores);
void printTestScoresAndFrequency(int testScores[], int numberOfScores);
void printPercentagePassingFailingGrades(int testScores[], int numberOfScores);
void printMeanModeMedianTestScores(int testScores[], int numberOfScores);

double greatestFrequencyScore = 0;

int main(void) {
    int numberOfScores = 30;
    int testScores[] = { 90, 85, 100, 50, 50, 85, 60, 70, 55, 55, 80, 95, 70, 60, 95, 80, 100, 75, 70, 95, 90, 90, 70, 95, 50, 65, 85, 95, 100, 65 };

//Please implement these functions as these functions are not implemented you are getting above errors
    //printTestScores(testScores, numberOfScores);
    //printTestScoresInAscendingOrder(testScores, numberOfScores);
    //printTestScoresAndFrequency(testScores, numberOfScores);
    printPercentagePassingFailingGrades(testScores, numberOfScores);
    printMeanModeMedianTestScores(testScores, numberOfScores);

    getchar(); getchar();
    printf("    Value          Frequency ");

    int i, j;

    i = 0;
    j = 0;

    int frequency[30];
    double scores[30];

    int index = 0;
    for (i = 0; i <= numberOfScores - 1; i++)
    {
        frequency[i] = 0;
        scores[j] = 0;

    }

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

        for (j = 0; j < index; j++) {
            if (testScores[i] == scores[j]) {
                frequency[j] = frequency[j] + 1;
                break;
            }
        }

        if (j == index) {
            frequency[index] = frequency[j] + 1;
            scores[index] = testScores[i];
            index++;
        }

    }

    greatestFrequencyScore = 0;

    int freq = 0;
    for (j = 0; j < index; j++) {
        printf("%8.2f           %d ", scores[j], frequency[j]);
        if (frequency[j] > freq) {
            freq = frequency[j];
            greatestFrequencyScore = scores[j];
        }

    }
    printf(" ");
}

void printPercentagePassingFailingGrades(int testScores[], int numberOfScores)
{
    double passingTestScores = 0;
    double failingTestScores = 0;
    int i;

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

        if (testScores[i] >= 60)
            passingTestScores++;
        else if (testScores[i] < 60)
            failingTestScores++;
    }

    printf("Percentage of passing scores = %.2f ", (passingTestScores * 100 / numberOfScores));
    printf("Percentage of failing scores = %.2f ", (failingTestScores * 100 / numberOfScores));
    printf(" ");
}

void printMeanModeMedianTestScores(int testScores[], int numberOfScores) {

    int i;
    double sumOfScores = 0;
    for (i = 0; i <= numberOfScores - 1; i++) {

        sumOfScores = sumOfScores + testScores[i];
    }

    double averageOfTwoMiddleNumbers = 0;

    if (numberOfScores % 2 == 0)
        averageOfTwoMiddleNumbers = (double)(testScores[numberOfScores / 2] + testScores[numberOfScores / 2 + 1]) / 2.0;

    printf("Mean of test scores = %.2f ", sumOfScores / numberOfScores);

    printf("Mode of test scores = %.2f ", greatestFrequencyScore);

    printf("Median of test scores = %.2f ", averageOfTwoMiddleNumbers);
    printf(" ");

}

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