student-status/step8.cpp

#include <stdio.h>
#include <string.h>
struct Message
{
	char Id[6];
	char clas[3];
	char name[10];
	double score1;
	double score2;
	double score3;
	double score;
}student[10];
int sum=0;
int main(){
	void MENU();
	void INPUT(int i);
	void DELETE();
	void SELECT();
	void SORT();
	void PRINT(int sum);
	int choose;
	MENU();
	scanf("%d",&choose);
	while(choose!=6){
		MENU();
		if(choose==1){
			INPUT(0);
		} 
		else if(choose==2){
			DELETE();
		}
		else if(choose==3){
			SELECT();
		}
		else if(choose==4){
			SORT();
		}
		else {
			PRINT(sum);
		}
		scanf("%d",&choose);	
	}
}
void MENU(){
	printf("1.input\n2.delete\n3.select\n4.order\n5.output\n6.quit\n");
	printf("please input your option\n");
}
void PRINT(int sum){
	int i;
	for(i=0;i<=sum;i++){
		printf("%s,%s,%s,%.1lf,%.1lf,%.1lf,%.1lf\n",student[i].Id,student[i].clas,student[i].name,student[i].score1,student[i].score2,student[i].score3,student[i].score);	
		}
}
int RESPONSE(){
	printf("continue?\n");
	char approve[5]="yes";
	char response[5];
	scanf("%s",response);
	if(strcmp(response,approve)==0)
		return 1;
	else
		return 0;
}
int INPUT(int i){
	printf("Id ");
	scanf("%s",student[i].Id);
	printf("class ");
	scanf("%s",student[i].clas);
	printf("name ");
	scanf("%s",student[i].name);
	printf("score1 ");
	scanf("%lf",&student[i].score1);
	printf("score2 ");
	scanf("%lf",&student[i].score2);
	printf("score3 ");
	scanf("%lf",&student[i].score3);
	int word=RESPONSE();
	if(word){
		sum++;
		INPUT(i+1);
	}
	student[i].score=student[i].score1+student[i].score2+student[i].score3;
	return 0;
}
void DELETE(){
	char input[10];
	int i,t=0;
	scanf("%s",input);
	for(i=0;i<=sum;i++){
		if(strcmp(student[i].Id,input)==0||strcmp(student[i].name,input)==0){
			t=1;
			break;
		}
	}
	if(t==0){
		PRINT(sum);
		}
	else{
		while(i<sum){
			student[i]=student[i+1];
			i++;
		}
		sum--;
		PRINT(sum);
	}
	int word=RESPONSE();
	if(word){
		DELETE();
	}
}
void SELECT(){
	char input[6];
	int i;
	scanf("%s",input);
	for(i=0;i<=sum;i++){
		if(strcmp(student[i].Id,input)==0||strcmp(student[i].clas,input)==0){
			printf("%s,%s,%s,%.1lf,%.1lf,%.1lf,%.1lf\n",student[i].Id,student[i].clas,student[i].name,student[i].score1,student[i].score2,student[i].score3,student[i].score);
		}
	}
	int word=RESPONSE();
	if(word){
		SELECT();
	}
}
void SORT(){
	int i,j;
	for(i=1;i<=sum;i++){
		for(j=0;j<sum+1-i;j++){
			if(strcmp(student[j].clas,student[j+1].clas)>0){
				struct Message temp;
				temp=student[j];student[j]=student[j+1];student[j+1]=temp;
			}
			else if(strcmp(student[j].clas,student[j+1].clas)==0&&student[j].score<student[j+1].score){
				struct Message temp;
				temp=student[j];student[j]=student[j+1];student[j+1]=temp;
			}
		}
	}
	PRINT(sum);
}