C/C++ 结构体 简单输入输出

#include <stdio.h>
#include <stdlib.h>

struct student{
    int num;
    char str[20];
    double dec;
};


int main(){

    struct student stu;
    
    scanf("%d%s%lf", &stu.num, stu.str, &stu.dec);
    printf("%d %s %lf
", stu.num, stu.str, stu.dec);

    return 0;
}
/*
20 字符串 20.02
*/