试图将struct成员复制到c中的字节数组

#include<stdio.h>
#include<string.h>

typedef struct {
    int a;
    int b;
} MyStruct;

int main() {
    MyStruct s = {1, 2};
    char buffer[sizeof(MyStruct)];

    memcpy(buffer, &s, sizeof(MyStruct));

    return 0;
}

#include<stdio.h>

typedef struct {
    int a;
    int b;
} MyStruct;

int main() {
    MyStruct s = {1, 2};
    char buffer[sizeof(MyStruct)];

    *(MyStruct*)buffer = s;

    return 0;
}