struct Student{

    char name[10];

    int age;

    char gender;

}std[3], *p=std;

则以下各输入语句中错误的是：

struct  ex { 

  int x;

  float y;

  char z ;

} example;

struct student{  

  int no;

  char name[20];

  char sex;

  struct{

    int year;

    int month;

    int day;

  }birth;

};struct student s;

void f(int *p){

      *p = 5;

}

int main(void){

      int a, *p;

      a = 10;

      p = &a;

      f(p);

      printf(“%d”, (*p)++);

      return 0;

}

char a[]=”language”, *p;

p = a;

while( *p != 'u') { printf("%c", *p - 32); p++; }

struct student{

   int num;

   int age;

};

struct student stu[3] = {{101, 20}, {102, 19}, {103, 20}}, *p = stu;