c++ - Error Compiling simple program Error LNK2019 -


error 1 error lnk2019: unresolved external symbol "int __cdecl findlowest(int,int,int,int,int)" (?findlowest@@yahhhhhh@z) referenced in function _main g:\c++\chapter 6\lowest score drop\lowest score drop\source.obj lowest score drop

#include <iostream> #include <iomanip> using namespace std;  //function prototypes void getscore(int &score); int findlowest(int, int, int, int, int); void calcaverage(int, int, int, int, int, int);  int lowest = 0;  int main() { int score1, score2, score3, score4, score5;  getscore(score1); // return 1st score getscore(score2); // return 2nd score getscore(score3); // return 3rd score getscore(score4); //return 4th score getscore(score5); //return 5th score   lowest = findlowest(score1, score2, score3, score4, score5);  calcaverage(score1, score2, score3, score4, score5, lowest);  return 0; }  void getscore(int &score) { (int count = 1; count <= 5; count++) {     cout << "please enter test score test " << count << ": ";     cin >> score; } }  int findlowest(int score1, int score2, int score3, int score4, int score5) { int calclowest = score1; {     if (score2 < score1)         calclowest = score2;     else if (score3 < score2)         calclowest = score3;     else if (score4 < score3)         calclowest = score4;     else if (score5 < score4)         calclowest = score5; } cout << "the lowest test score " << calclowest << endl; return calclowest;   }  void calcaverage(int score1, int score2, int score3, int score4, int score5, int lowest) { int average; average = ((score1 + score2 + score3 + score4 + score5) - lowest)/4; cout << "the average of 4 highest scores " << average << endl; }

you have typographical error when wrote definition of function findlowest. 

int findlowest(int score1, int score2, int score3, int score4, int score5)

the l in findlowest in upper case forward declaration , function call has l in lower case.

int findlowest(int, int, int, int, int); lowest = findlowest(score1, score2, score3, score4, score5);

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