c++ - 错误:预期在 ‘.’ token 之前的不合格 ID - std::vector

Question

代码:

#include <vector>
#include <iostream>

typedef struct
{
    std :: string latitude;
    std :: string longitude;
} coordinate;

std :: vector <coordinate> previousPoints;

int main ()
{
    coordinate.latitude  = latitude;
    coordinate.longitude = longitude;
    previousPoints.push_back (coordinate);

    return 0;
}

输出:

anisha@linux-y3pi:~> g++ -Wall demo.cpp
demo.cpp: In function ‘int main()’:
demo.cpp:14:12: error: expected unqualified-id before ‘.’ token
demo.cpp:15:12: error: expected unqualified-id before ‘.’ token
demo.cpp:16:38: error: expected primary-expression before ‘)’ token

我错过了什么？

Answer 1

您需要创建一个实际变量以添加到您的 vector 中:

int main ()
{
    coordinate c;
    c.latitude  = latitude;
    c.longitude = longitude;
    previousPoints.push_back (c);