錯誤LNK 1120和LNK 2001

嘿，我正在開發一個程序，它執行許多簡單的事情來向我的老師表明我已經學會了使用函數。我已經多次閱讀這個論壇，並檢查了許多其他的，但他們都沒有解決我的問題。如下面的代碼是連接（我認爲），我得到的錯誤列表這些消息：錯誤LNK 1120和LNK 2001

錯誤LNK1120：1周無法解析的外部
錯誤LNK2001：解析外部符號_mainCRTStartup

可有人請幫我解決這個問題！

這裏是我的代碼

#include <iostream.h> 
#include <math.h> 

using namespace std; 

int a; 
int b; 
float c; 
int d; 

float p_theorem (int side_a, int side_b){ 
    return sqrtf((side_a * side_a)+(side_b * side_b)); 
} 

float p_theorem_reverse (int side_c, int side_d){ 
    return sqrtf((side_c * side_c)-(side_d * side_d)); 
} 

void game(int x){ 
    if (x < 5){ 
     cout<<"Your number is too low"<<endl<<"Please guess again: "; 
     cin>>x; 
    } 
    else if (x > 5){ 
     cout<<"Your number is too big"<<endl<<"Please guess again: "; 
     cin>>x 
    } 
    else (x == 5){ 
     cout<<"Good job, You guessed the number!"<<endl; 
     system("PAUSE"); 
    } 
} 

void stuff(){ 
    cout<<"Developed by Ely Eastman"<<endl<<"Computer 35, T.H. Rogers Secondary  School, Houston, TX"<<endl; 
    system("PAUSE"); 
} 

int main(void) 
{ 
    cout<<"Welcome to the Multi-Function Program"<<endl 
     <<"Enter 1 for finding the hypotenuse of a right triangle"<<endl 
     <<"Enter 2 for finding the leg of a right triangle"<<endl 
     <<"Enter 3 for the Guessing Game Beta"<<endl 
     <<"Enter 4 for Developer Information"<<endl; 

    cin>>d 
    if (d == 1){ 
     cout<<"Welcome to the Pythagorean Theorem Solver"<<endl 
      <<"Please enter the length of one leg of the  triangle: "; 
     cin>>a; 
     cout<<"Please enter the length of the other leg of the triangle: "; 
     cin>>b; 
     c = p_theorem(a, b); 
     cout<<"The length of the hypotenuse is "<<c<<endl; 
     system("PAUSE"); 
    } 
    else if (d == 2){ 
     cout<<"Welcome to the Reverse Pythagorean Theorem"<<endl 
      <<"Please enter the length of the Hypotenuse: "; 
     cin>>a; 
     cout<<"Please enter the length of the known leg: "; 
     cin>>b; 
     c = p_theorem_reverse(a, b); 
     cout<<"The length of the leg is: "<<g<<endl; 
     system("PAUSE") 
    } 
    else if (d == 3){ 
     cout<<"Welcome to the Guessing Game Beta"<<endl 
      <<"Please guess a number 1-10: "; 
     cin<<a 
      game(a); 
    } 
    else if (d == 4){ 
     stuff(); 
    } 

    return 0; 
}

來源

2011-05-12 Ely Eastman

這個程序如何進入連接階段？ 'else（x == 5）{}'。「超鏈接」標籤與你的程序有什麼關係？ – Mahesh 2011-05-12 19:59:48

你有幾十個失蹤的「;」以及缺少陳述。此外，遊戲「g」的長度未定義。在某些情況下，你的cin「>>」操作符被顛倒過來...... – Pepe 2011-05-12 20:01:03

爲了避免歇斯底里，我懷疑你創建了一個Windows GUI項目，當你真的想創建一個Windows控制檯項目時。 – 2011-05-12 20:05:50

你有幾十個失蹤的「;」以及缺少陳述。此外，遊戲「g」的長度未定義。並且在某些情況下，您的cin「>>」操作符會顛倒過來...

編輯：正如Neil在註釋中指出的，您可能需要指定您正在創建控制檯應用程序。

工作？代碼（請儘量注意什麼我改變，而不僅僅是複製/粘貼，有些錯誤是非常基本的知識）：

#include <iostream> 
#include <math.h> 

using namespace std; 

int a; 
int b; 
float c; 
int d; 

float p_theorem (int side_a, int side_b){ 
    return sqrtf((side_a * side_a)+(side_b * side_b)); 
} 

float p_theorem_reverse (int side_c, int side_d){ 
    return sqrtf((side_c * side_c)-(side_d * side_d)); 
} 

void game(int x) 
{ 
    if (x < 5) 
    { 
     cout<<"Your number is too low"<<endl<<"Please guess again: "; 
     cin>>x; 
    } 
    else if (x > 5){ 
     cout<<"Your number is too big"<<endl<<"Please guess again: "; 
     cin>>x; 
    } 
    else if (x == 5) 
    { 
     cout<<"Good job, You guessed the number!"<<endl; 
     system("PAUSE"); 
    } 
} 

void stuff(){ 
    cout<<"Developed by Ely Eastman"<<endl<<"Computer 35, T.H. Rogers Secondary  School, Houston, TX"<<endl; 
    system("PAUSE"); 
} 

int main(void) 
{ 
    cout<<"Welcome to the Multi-Function Program"<<endl 
     <<"Enter 1 for finding the hypotenuse of a right triangle"<<endl 
     <<"Enter 2 for finding the leg of a right triangle"<<endl 
     <<"Enter 3 for the Guessing Game Beta"<<endl 
     <<"Enter 4 for Developer Information"<<endl; 

    cin>>d; 
    if (d == 1){ 
     cout<<"Welcome to the Pythagorean Theorem Solver"<<endl 
      <<"Please enter the length of one leg of the  triangle: "; 
     cin>>a; 
     cout<<"Please enter the length of the other leg of the triangle: "; 
     cin>>b; 
     c = p_theorem(a, b); 
     cout<<"The length of the hypotenuse is "<<c<<endl; 
     system("PAUSE"); 
    } 
    else if (d == 2){ 
     cout<<"Welcome to the Reverse Pythagorean Theorem"<<endl 
      <<"Please enter the length of the Hypotenuse: "; 
     cin>>a; 
     cout<<"Please enter the length of the known leg: "; 
     cin>>b; 
     c = p_theorem_reverse(a, b); 
     cout<<"The length of the leg is: "<<c<<endl; // <- What is g?!!! I think you had a typo 
     system("PAUSE"); 
    } 
    else if (d == 3){ 
     cout<<"Welcome to the Guessing Game Beta"<<endl 
      <<"Please guess a number 1-10: "; 
     cin>>a; 
      game(a); 
    } 
    else if (d == 4){ 
     stuff(); 
    } 

    return 0; 
}

來源

2011-05-12 20:02:43 Pepe

假設你是在Visual Studio 2005中，去的的屬性項目，打開鏈接器在配置屬性子系統將是名單上的第一項。然後選擇Windows (/SUBSYSTEM:WINDOWS)

來源

2011-05-12 20:07:29 karlphillip

將'/ SUBSYSTEM'設置爲'WINDOWS'將使鏈接器查找'WinMain'或'wWinMain'。他顯然希望'/ SUBSYSTEM：CONSOLE'，因此鏈接器將查找'main'或'wmain'。 – ildjarn 2011-05-12 20:32:50

好的，謝謝。但讓我們先聽聽他的輸入。 – karlphillip 2011-05-12 20:36:23

檢查您的項目設置並查看是否設置了/NODEFAULTLIB鏈接器選項。如果是，請取消設置。

來源

2011-05-12 20:40:06 ildjarn

錯誤LNK 1120和LNK 2001

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