如何使用DOT運算符初始化struct類型的數組

Question

我正在嘗試初始化main（）中的struct類型的數組，但是編譯器返回錯誤field designator cannot initialize a non-struct, non-union type My Code：

struct details{
    const char *author;
    const char *title;
};


int main()
{
    const char *input = "Data Structures and Algorithm";
    struct details a [] = { 
        .author = "Narsimha", 
        .title = input
    };  
    printf("%s\n", a[0].author);
    printf("%s\n", a[0].title);

    return 0;
}
gcc inputs.c 
inputs.c:16:9: error: field designator cannot initialize a non-struct, non-union type 'struct details []'
        .author = "Narsimha", 
        ^
inputs.c:17:9: error: field designator cannot initialize a non-struct, non-union type 'struct details []'
        .title = input
        ^
2 errors generated.

Answer 1

您缺少一對牙套。 試試這個：

struct details a [] = {{ 
        .author = "Narsimha", 
        .title = input
    }};

外部括號用於定義數組。 內部花括號用於該struct 。