-2
我得到這個錯誤： error LNK2019: unresolved external symbol "double __cdecl calculateRetail(double,double)" ([email protected]@[email protected]) referenced in function _main 1>c:\users\100236744\documents\visual studio 2010\Projects\Item sales price calculator\Debug\Item sales price calculator.exe : fatal error LNK1120: 1 unresolved externals錯誤LNK2019：無法解析的外部符號 「雙__cdecl calculateRetail（雙，雙）」
我很新的C++。
// FILE: Price markup calculator.cpp
// PROGRAMMER: Karolina Sabat CPSC 1103 Section: S11
// Program which calculates the retail cost of an item based on wholesale cost and mark up percentage.
// Calculates the total interest paid based on the annual interest rate.
#include <iostream> // For cin, cout
#include <iomanip> // For setw, setprecision
using namespace std;
// FUNCTION PROTOTYPES
void getData (double &, double &); // Receives USER INPUT - Wholesale cost & percentage markup
double calculateRetail(double, double); // Calculates retail price
void Display (double, double, double); // Displays results: Wholesale cost, markup percentage, retail price
int main()
{
// VARIABLES
double wholesale_cost = 0; // Wholesale item cost - USER INPUT
double markup_percent = 0; // Markup percentage
double retail_price = 0; // Calculated retail cost
// FUNCTION CALL 1: Wholesale cost - USER INPUT
getData(wholesale_cost, markup_percent);
// FUNCTION CALL 2: Retail price - CALCULATION
calculateRetail(wholesale_cost, markup_percent);
// FUNCTION CALL 3: Display Wholesale price, markup percentage, retail price - OUTPUT
Display(wholesale_cost, markup_percent, retail_price);
// PROGRAM MADE BY - OUTPUT
cout << endl << endl;
cout << " Written by: Karolina Sabat - CPSC 1103 - Section: S11" << endl << endl;
return 0;
}
// FUNCTION 1: GetData
void getData (double &wholesale_c, double &markup_p)
{
// Wholesale cost - USER INPUT
cout << " Please enter the item's wholesale cost: $ ";
cin >> wholesale_c;
// Wholesale cost - INVALID ENTRY
while (wholesale_c < 0)
{
cout << endl;
cout << " Please enter a wholesale cost greater than 0." << endl;
cout << " Item's wholesale cost: $ ";
// Will clear characters
cin.clear();
cin.ignore(numeric_limits<streamsize>::max(), '\n');
cin >> wholesale_c;
}
// Wholesalecost - VALID
// Markup percentage - USER INPUT
cout << "Please enter the markup percentage: % " ;
cin >> markup_p;
// Markup percentage - INVALID
while (markup_p < 0)
{
cout << " ERROR: INVALID INPUT." << endl;
cout << " Please enter a markup percentage greater than 0." << endl;
cout << " Markup percentage: % ";
// Will clear characters
cin.clear();
cin.ignore(numeric_limits<streamsize>::max(), '\n');
cin >> markup_p;
}
}
// FUNCTION 2: CalculateRetail
double CalculateRetail (double wholesale_c, double markup_p)
{
// VARIABLES
double markup_amount;
double retail_price;
// CALCULATIONS
markup_amount = (wholesale_c * markup_p)/100;
// Markup amount
retail_price = wholesale_c + markup_amount;
return retail_price;
}
// FUNCTION 3: Display
void Display (double wholesale_cost, double markup_percent, double retail_price)
{
// Title - OUTPUT
cout << endl;
cout << " WHOLESALE COST: " << setw(10) << "PRICE MARKUP %: " << setw(10) << "RETAIL PRICE" << endl;
cout << " ________________________________________________________________________________" << endl;
cout << endl;
// NUMBER FORMATING
cout << setprecision(2) << fixed << showpoint;
// Results - OUTPUT
cout << " " << wholesale_cost << setw(10) << markup_percent << setw(10) << retail_price;
}
[錯誤LNK2019解析外部符號]的可能重複（http://stackoverflow.com/questions/12297952/error-lnk2019-unresolved-external-symbol）和約三十多人。搜索「錯誤LNK2019：無法解析的外部符號」可能會引發許多以往問題的鏈接。在發佈之前先進行基礎研究是很好的。 –
我沒有搜索過這個論壇，我明白這個錯誤，但是一小時後我的代碼找不到錯誤。我沒有看到大寫錯誤。其他人的編碼錯誤不能幫助我。 – tinywolves
好的，它應該是關閉的話題，因爲「這個問題是由不能再現的問題引起的，或者是一個簡單的印刷錯誤**。雖然類似的問題可能在這裏討論，但這個問題已經解決了以不太可能幫助未來讀者的方式，這通常可以通過識別並密切檢查在發佈之前重現問題所需的最短程序來避免。「 –