Compile your own DLL and export the Function

Sub. c

#include<windows.h>#include"sub.h"int WINAPI DllMain(_In_ HANDLE _HDllHandle, _In_ DWORD _Reason, _In_opt_ LPVOID _Reserved)   {       return TRUE;   } EXPORT int sub(int a,int b){    return a-b;}EXPORT int add(int a,int b){    return a+b;}

Sub. h

#ifdef __cplusplus   #define EXPORT extern "C" __declspec (dllexport)   #else   #define EXPORT __declspec (dllexport)   #endif   EXPORT int sub(int a,int b);EXPORT int add(int a,int b);

Then generate the solution:

You can see a sub. Lib, sub. dll in the debug/release directory.

Then we

You can package the sub. Lib, sub. dll, and sub. H files.

How to use it?

Method 1: copy the three files to the current directory and use the displayed link:

#include<windows.h>#include<stdio.h>  #include"sub.h"#pragma comment(lib,"subDll.lib")  int main(){    int a=4,b=1;    int c;//    printf("%d+%d=%d\n",a,b,add(a,b));    c=sub(a,b);    printf("%d-%d=%d\n",a,b,c);    return 0;}

Method 2:

Step 1:

Step 2:

 

#include<windows.h>#include<stdio.h>  #include"sub.h"//#pragma comment(lib,"subDll.lib")  int main(){    int a=4,b=1;    int c;//    printf("%d+%d=%d\n",a,b,add(a,b));    c=sub(a,b);    printf("%d-%d=%d\n",a,b,c);    return 0;}

Compiled and run successfully!

 

Compile your own DLL and export the Function