有一个结构体变量stu，内含学生学号、姓名和成绩。要求在main（）函数中给其赋值

#include
#include
struct student
{lont int num;
char name[20];
float grade;
}stu[3];
void main()
{printf("input num,name,grade\n:");
scanf("%d,%f,%d",&stu.num,stu.name,&stu.grade);
printf("%d,%f,%d,stu.num,stu.name,stu.grade);
}

#include "stdio.h"
struct student
{lont int num;
char name[20];
float grade;
}stu[3];
void main()
{printf("input num,name,grade\n:");
scanf("%d,%f,%d",&stu.num,stu.name,&stu.grade);
printf("%d,%f,%d,stu.num,stu.name,stu.grade);
}

写个小例子给你看看
#include

struct Student
{
long id;
char* name;
float score;
};
typedef struct Student Student;

int main()
{
Student st;
st.id=100100;
st.name="Zhou Qi";
st.score=80.5;
printf("id: %ld\n",st.id);
printf("name: %s\n",st.name);
printf("score: %f\n",st.score);
return 0;
}

晕，分都没