程序代码：

#include <Windows.h>
#include <TlHelp32.h>
#include <stdio.h>

int main(int argc, char* argv[])
{
    if (2 != argc)
    {
        printf("参数错误.\n");
        return -1;
    }
   
    PROCESSENTRY32 pe32;
    pe32.dwSize = sizeof(pe32);
   
    HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (INVALID_HANDLE_VALUE == hProcessSnap)
    {
        printf("CreateToolhelp32Snapshot调用失败.\n");
        return -1;
    }

    bool IsExist = Process32First(hProcessSnap, &pe32);
    while (IsExist)
    {
        if (0 == strcmp(argv[1], pe32.szExeFile))
        {
            TerminateProcess(OpenProcess(PROCESS_ALL_ACCESS, false, pe32.th32ProcessID),0);
            printf("进程 %s 已被关闭.\n", argv[1]);
            CloseHandle(hProcessSnap);
            return 0;
        }
        IsExist = Process32Next(hProcessSnap,&pe32);
    }

    printf("没有找到进程 %s.\n", argv[1]);
    CloseHandle(hProcessSnap);
    return 0;
}