版本1 (// copyright by hwdong)
#include "cstring"
#include "malloc.h"
#include "cstdio"
typedef struct{
char name[30];
float score;
} student;
int main(){
student stus[100];
int i = 0,j = 0,k=0 ;
do{
printf("请输入学生姓名和分数：\n");
scanf("%s", stus[i].name);
scanf("%f", &(stus[i].score));
if(stus[i].score>=60) j++;
}while(stus[i++].score>=0);
i--;
for(k=0;k<i;k++){
printf("name:%s score:%3.2f\n",
stus[k].name, stus[k].score);
}
printf("num of passed:%d\n",j);
}
版本2 (// copyright by hwdong)
#include "cstring"
#include "malloc.h"
#include "cstdio"
typedef struct{
char name[30];
float score;
} student;
void In_student(student &s){
scanf("%s",s.name);
scanf("%f",&(s.score));
}
void Out_student(const student s){
printf("name:%s score:%3.2f\n",
s.name, s.score);
}
int main(){
student stus[100];
int i = 0,j = 0,k=0 ;
do{
printf("请输入学生姓名和分数：\n");
In_student(stus[i]);
if(stus[i].score>=60) j++;
}while(stus[i++].score>=0);
i--;
for(k=0;k<i;k++)
Out_student(stus[k]);
printf("num of passed: %d\n",j);
}
版本3 (// copyright by hwdong)
#include "cstring"
#include "malloc.h"
#include "cstdio"
typedef struct{
char name[30];
float score;
} student;
void In_student(student &s){
scanf("%s",s.name);
scanf("%f",&(s.score));
}
void Out_student(const student s){
printf("name:%s score:%3.2f\n",
s.name, s.score);
}
const int INITSIZE = 33;
const int INC = 30;
int main(){
int size = INITSIZE;
int i = 0,j = 0,k=0 ;
student *stus = (student *)malloc(size*sizeof(student));
do{
if(i>=size){
student *stus_new =(student *)realloc(stus,(size+INC)*sizeof(student));
if(stus_new) {
free(stus); stus = stus_new;
}
else{
//...
}
}
printf("请输入学生姓名和分数：\n");
In_student(stus[i]);
if(stus[i].score>=60) j++;
}while(stus[i++].score>=0);
i--;
for(k=0;k<i;k++) Out_student(stus[k]);
printf("num of passed:%d\n",j); free(stus);
}
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