c语言 12-2
1、
#include <stdio.h> #define NAME_LEN 64 typedef struct student{ // 为类型声明 typedef名, Student相当于 struct student char name[NAME_LEN]; int height; float weight; long schols; } Student; void con(Student *x) // 函数的形参为struct student型结构体指针 { if(x -> height < 180) // 使用箭头运算符 访问结构体的成员 x -> height = 180; if(x -> weight > 80) x -> weight = 80; } int main(void) { Student sanata; printf("sanata.name = "); scanf("%s", sanata.name); printf("sanata.height = "); scanf("%d", &sanata.height); printf("sanata.weight = "); scanf("%f", &sanata.weight); printf("sanata.schols = "); scanf("%ld", &sanata.schols); con(&sanata); // 调用函数, 实参为结构体的指针 puts("\n=============================="); printf("sanata.name = %s\n", sanata.name); printf("sanata.heght = %d\n", sanata.height); printf("sanata.weight = %.1f\n", sanata.weight); printf("sanata.schols = %ld\n", sanata.schols); return 0; }