如果ＬＺ不怕麻烦，在cmd的窗口中运行程序绝对不会闪没了！

谢谢各位了，是在}后面加吧

#include <iostream>

int main()
{
    std::cout <<
    "this is the beginning of a very long message\n"
    "that apans several lines of code.\n"
    "This format allows a program to build long\n"
    "string constrants without going past the\n"
    "program editor'srightmargin.\n";
    return 0;
    system("pause");
}
是这样的吗

#include <iostream>

int main()
{
    std::cout <<
    "this is the beginning of a very long message\n"
    "that apans several lines of code.\n"
    "This format allows a program to build long\n"
    "string constrants without going past the\n"
    "program editor'srightmargin.\n";
    
    system("pause");
    return 0;
}
这样对了谢谢各位的帮助哈哈

cmd是个什么东西？？

命令窗口

在程序return前加个getchar()呀者system(pause)

还是看不见结果啊？？

加上 system（"pause"）;。run的时候会出现一个dos窗口，提示：按任意键继续，按了之后DOS窗口就没了！