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pecp45i32 17 hours ago
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commit 1ca4da1b11
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step8.cpp
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int studentMember = 7;
typedef struct storeInformation
{
char stus[100];
int classes;
char names[100];
double mathGrade;
double physicsGrade;
double englishGrade;
int boolNew;
} stu;
stu studentInformation[100] = {
{ "10001", 11, "Zhang", 99.5, 88.5, 89.5, 0 },
{ "10002", 12, "Yang", 77.9, 56.5, 87.5, 0 },
{ "10003", 11, "Liang", 92.5, 99.0, 60.0, 0 },
{ "10004", 11, "Cai", 89.6, 56.9, 90.5, 0 },
{ "10005", 14, "Fu", 55.6, 67.9, 98.9, 0 },
{ "10006", 12, "Mao", 22.1, 45.9, 99.2, 0 },
{ "10007", 13, "Zhan", 35.6, 67.9, 88.0, 0 }
};
void input(int i) {
printf("Id ");
scanf("%s", studentInformation[i].stus);
printf("class ");
scanf("%d", &studentInformation[i].classes);
printf("name ");
scanf("%s", studentInformation[i].names);
printf("score1 ");
scanf("%lf", &studentInformation[i].mathGrade);
printf("score2 ");
scanf("%lf", &studentInformation[i].physicsGrade);
printf("score3 ");
scanf("%lf", &studentInformation[i].englishGrade);
}
void inputStudentInformation() {
char a[10];
do {
input(studentMember);
studentInformation[studentMember].boolNew = 0;
studentMember++;
printf("One student has been input!\n");
printf("cotinue?(yes/no)\n");
scanf("%s", &a);
} while (strcmp(a, "no") == 0);
}
void insertedNew() {
int i = studentMember;
input(i);
studentMember++;
studentInformation[i].boolNew = 1;
printf("One student has been input!\n");
}
void informationClear(char a[100]) {
int i = 0;
for (i = 0; i < studentMember; i++) {
if (strcmp(a, studentInformation[i].stus) == 0 || strcmp(a, studentInformation[i].names) == 0) {
memset(&studentInformation[i], 0, sizeof(studentInformation[i]));
}
}
}
void sortStudents() {
for (int i = 0; i < studentMember - 1; i++) {
for (int j = 0; j < studentMember - i - 1; j++) {
double totalScoreJ = studentInformation[j].mathGrade + studentInformation[j].physicsGrade + studentInformation[j].englishGrade;
double totalScoreJ1 = studentInformation[j + 1].mathGrade + studentInformation[j + 1].physicsGrade + studentInformation[j + 1].englishGrade;
if (studentInformation[j].classes > studentInformation[j + 1].classes ||
(studentInformation[j].classes == studentInformation[j + 1].classes && totalScoreJ < totalScoreJ1)) {
stu temp = studentInformation[j];
studentInformation[j] = studentInformation[j + 1];
studentInformation[j + 1] = temp;
}
}
}
printf("Students have been sorted!\n");
}
void printStudentOriginalScore() {
int classs = 0;
for (int i = 0; i < studentMember; i++) {
if (studentInformation[i].classes != 0) {
if (studentInformation[i].classes != classs) {
printf("%d %s %s %.1f %.1f %.1f %s\n",
studentInformation[i].classes,
studentInformation[i].stus,
studentInformation[i].names,
studentInformation[i].mathGrade,
studentInformation[i].physicsGrade,
studentInformation[i].englishGrade,
studentInformation[i].boolNew == 0 ? "" : studentInformation[i].boolNew == 1 ? "inserted" : "modified");
}
else {
printf(" %s %s %.1f %.1f %.1f %s\n",
studentInformation[i].stus,
studentInformation[i].names,
studentInformation[i].mathGrade,
studentInformation[i].physicsGrade,
studentInformation[i].englishGrade,
studentInformation[i].boolNew == 0 ? "" : studentInformation[i].boolNew == 1 ? "inserted" : "modified");
}
classs = studentInformation[i].classes;
studentInformation[i].boolNew = 0;
}
}
}
void modifyStudent() {
char a[10];
printf("Are you sure(yes/no)");
scanf("%s", &a);
if ((strcmp(a, "yes")) == 0) {
char stusToModify[10];
printf("Enter the student number to modify, followed by new data ( 10001 2 Kobe 59 59 59):\n");
scanf("%s", stusToModify);
int found = 0;
for (int i = 0; i < studentMember; i++) {
if (strcmp(studentInformation[i].stus, stusToModify) == 0) {
found = 1;
scanf("%d %s %lf %lf %lf",
&studentInformation[i].classes,
studentInformation[i].names,
&studentInformation[i].mathGrade,
&studentInformation[i].physicsGrade,
&studentInformation[i].englishGrade);
studentInformation[i].boolNew = 2;
printf("Student data modified successfully!\n");
break;
}
}
if (!found) {
printf("Student with number %s not found.\n", stusToModify);
}
}
}
void queryByClassRange(int startClass, int endClass) {
printf("Students in classes %d to %d:\n", startClass, endClass);
for (int i = 0; i < studentMember; i++) {
if (studentInformation[i].classes >= startClass && studentInformation[i].classes <= endClass) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
}
}
}
void queryByIDRange(char startID[10], char endID[10]) {
printf("Students with IDs %s to %s:\n", startID, endID);
for (int i = 0; i < studentMember; i++) {
if (strcmp(studentInformation[i].stus, startID) >= 0 &&
strcmp(studentInformation[i].stus, endID) <= 0) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
}
}
}
void queryByNamePrefix(const char* prefix) {
printf("Students with names starting with %s:\n", prefix);
for (int i = 0; i < studentMember; i++) {
if (strncmp(studentInformation[i].names, prefix, strlen(prefix)) == 0) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
}
}
}
void queryByTotalScore(double threshold) {
printf("Students with total score >= %.1f:\n", threshold);
for (int i = 0; i < studentMember; i++) {
double totalScore = studentInformation[i].mathGrade + studentInformation[i].physicsGrade + studentInformation[i].englishGrade;
if (totalScore >= threshold) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
}
}
}
void queryByClassAndIDRange(int classNum, char startID[10], char endID[10]) {
printf("Students in class %d with IDs %s to %s:\n", classNum, startID, endID);
for (int i = 0; i < studentMember; i++) {
if (studentInformation[i].classes == classNum &&
strcmp(studentInformation[i].stus, startID) >= 0 &&
strcmp(studentInformation[i].stus, endID) <= 0) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
}
}
}
void queryByAttribute() {
char input[20];
printf("Enter search term (ID, class, or name): ");
scanf("%s", input);
printf("Search results for '%s':\n", input);
int found = 0;
for (int i = 0; i < studentMember; i++) {
if (strcmp(studentInformation[i].stus, input) == 0 ||
atoi(input) == studentInformation[i].classes ||
strcmp(studentInformation[i].names, input) == 0) {
printf("%s %d %s %.1f %.1f %.1f\n",
studentInformation[i].stus, studentInformation[i].classes, studentInformation[i].names,
studentInformation[i].mathGrade, studentInformation[i].physicsGrade, studentInformation[i].englishGrade);
found = 1;
}
}
if (!found) {
printf("No students found matching '%s'.\n", input);
}
}
void handleInput() {
int queryType;
printf("Enter query type (1-5): ");
scanf("%d", &queryType);
if (queryType == 1) {
int startClass, endClass;
printf("Enter class range (start end): ");
scanf("%d %d", &startClass, &endClass);
queryByClassRange(startClass, endClass);
}
else if (queryType == 2) {
char startID[10], endID[10];
printf("Enter ID range (start end): ");
scanf("%s %s", startID, endID);
queryByIDRange(startID, endID);
}
else if (queryType == 3) {
char prefix[10];
printf("Enter name prefix: ");
scanf("%s", prefix);
queryByNamePrefix(prefix);
}
else if (queryType == 4) {
double threshold;
printf("Enter total score threshold: ");
scanf("%lf", &threshold);
queryByTotalScore(threshold);
}
else if (queryType == 5) {
int classNum;
char startID[10], endID[10];
printf("Enter class and ID range (class startID endID): ");
scanf("%d %s %s", &classNum, startID, endID);
queryByClassAndIDRange(classNum, startID, endID);
}
else {
printf("Invalid query type.\n");
}
}
int manage() {
printf("1.input\n");
printf("2.delete\n");
printf("3.select\n");
printf("4.order\n");
printf("5.output\n");
printf("6.quit\n");
printf("Please input your option: ");
char keywords;
keywords = getchar();
while (keywords == '\n') {
keywords = getchar();
}
switch (keywords) {
case '1':
inputStudentInformation();
return 0;
case '2': {
char a[100], b[100];
do {
printf("Please enter student's ID or Name: ");
scanf("%s", a);
informationClear(a);
printf("Continue? (yes/no): ");
scanf("%s", b);
} while (strcmp(b, "no") != 0);
return 0;
}
case '3':
queryByAttribute();
return 0;
case '4':
sortStudents();
printStudentOriginalScore();
return 0;
case '5':
printStudentOriginalScore();
return 0;
case '6':
return 1;
default:
printf("Invalid option. Please try again.\n");
return 0;
}
}
int main() {
while (manage() == 0) {
}
return 0;
}
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