Question

Undefined symbols for architecture x86_64:
  "_main", referenced from:
     implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

这是错误消息。我是C ++初学者，我使用Sublime Text 3编写以下代码。我不知道如何处理它，我没有在我的macbook中安装Xcode。请帮忙！

#include <string>
#include <iostream>
using namespace std;
bool StringContain(string &a,string &b)
{
    const int p[26] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,61, 67, 71, 73, 79, 83, 89, 97, 101};
    int f = 1;
    for (int i = 0; i < a.length(); ++i)
    {
        int x = p[a[i] - 'A'];
        if (f % x)
        {
            f *= x;
        }
    }
    for (int i = 0; i < b.length(); ++i)
    {
        int x = p[b[i] - 'A'];
        if (f % x)
        {
            return false;
        }
    }
    return true;
}

Answer 1

您需要一个main函数，这是您的可执行文件的入口点。

#include <string>
#include <iostream>
using namespace std;
bool StringContain(string &a,string &b)
{
    const int p[26] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,61, 67, 71, 73, 79, 83, 89, 97, 101};
    int f = 1;
    for (int i = 0; i < a.length(); ++i)
    {
        int x = p[a[i] - 'A'];
        if (f % x)
        {
            f *= x;
        }
    }
    for (int i = 0; i < b.length(); ++i)
    {
        int x = p[b[i] - 'A'];
        if (f % x)
        {
            return false;
        }
    }
    return true;
}

int main()
{
  return 0;
}

如果您正在尝试构建独立对象，则需要检查编译它的行。

架构x86_64 mac的未定义符号

1 个答案: