输出以`||`分隔的参数的变量宏

#define CONCATENATE(x, y) x ## y
#define STRINGIFY(x) #x
#define SEPARATOR "||"

#define CONCATENATE_WITH_SEPARATOR(x, y) STRINGIFY(CONCATENATE(x, y)) SEPARATOR

int main() {
    int param1 = 10;
    float param2 = 3.14;
    char param3[] = "Hello";

    printf("%s\n", CONCATENATE_WITH_SEPARATOR(param1, param2));
    printf("%s\n", CONCATENATE_WITH_SEPARATOR(param2, param3));
    printf("%s\n", CONCATENATE_WITH_SEPARATOR(param1, param3));

    return 0;
}

10||3.14
3.14||Hello
10||Hello