By GokiSoft.com|
20:06 06/01/2022|
Lập Trình C
[Video] Quản lý sinh viên 2 - Assigment - Lập trình C - C2110L
Quản lý sinh viên 2 - Assigment - Lập trình C
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
typedef struct Student_ST {
char fullname[30];
char rollNo[10];
int year;
float mark;
} Student;
void showMenu();
void input(Student *p);
void display(Student p[3]);
void searchByYear(Student p[3]);
void saveFile(Student *p);
void readFile(Student *p);
void saveTextFile(Student *p);
int main(int argc, char *argv[]) {
//1) Khai bao mang sinh vien
Student studentList[3];
char choose;
do {
showMenu();
fflush(stdin); fflush(stdout);
scanf("%c", &choose);
switch(choose) {
case '1': {
input(studentList);
break;
}
case '2': {
display(studentList);
break;
}
case '3': {
searchByYear(studentList);
break;
}
case '4': {
saveFile(studentList);
break;
}
case '5': {
readFile(studentList);
break;
}
case '6': {
saveTextFile(studentList);
break;
}
case 'N':
case 'n':
case '7': {
printf("\nThoat chuong trinh!!!");
break;
}
default: {
printf("\nNhap sai!!!");
break;
}
}
} while(choose != '7' && choose != 'N' && choose != 'n');
return 0;
}
void showMenu() {
printf("\n1. Nhap thong tin sinh vien");
printf("\n2. Sap xep, hien thi, thong ke");
printf("\n3. Tim kiem theo nam sinh");
printf("\n4. Luu student.dat");
printf("\n5. Doc student.dat");
printf("\n6. Luu student.txt");
printf("\n7. Thoat (7 | N | n)");
printf("\nChon: ");
}
void input(Student *p) {
int i;
for(i=0;i<3;i++) {
printf("\nNhap thong tin sinh vien thu %d", i + 1);
printf("\nNhap ten: ");
fflush(stdin); fflush(stdout);
gets(p[i].fullname);
printf("\nNhap MSV: ");
fflush(stdin); fflush(stdout);
gets(p[i].rollNo);
printf("\nNhap nam sinh: ");
scanf("%d", &p[i].year);
printf("\nNhap diem: ");
scanf("%f", &p[i].mark);
}
}
void display(Student p[3]) {
int i, j;
//1) Sort sinh vien theo diem giam dan
for(i=0;i<2;i++) {
for(j=i+1;j<3;j++) {
if(p[i].mark < p[j].mark) {
//doi cho vi tri 2 phan tu
Student tmp = p[i];
p[i] = p[j];
p[j] = tmp;
}
}
}
//2) Hien thi thong tin sinh vien
char status[30];
printf("\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
for(i=0;i<3;i++) {
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
printf("\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
//3) Bao cao thong ke
//Su dung duoc cho duy nhat bai nay
int dCount = 0, cCount = 0, pCount = 0, fCount = 0;
for(i=0;i<3;i++) {
if(p[i].mark >= 7.5) {
dCount++;
} else if(p[i].mark >= 6) {
cCount++;
} else if(p[i].mark >= 4) {
pCount++;
} else {
fCount++;
}
}
if(pCount > 0) {
printf("\nDISTINCTION gom %d sinh vien", dCount);
}
if(cCount > 0) {
printf("\nCREDIT gom %d sinh vien", cCount);
}
if(pCount > 0) {
printf("\nPASS gom %d sinh vien", pCount);
}
if(fCount > 0) {
printf("\nFAIL gom %d sinh vien", fCount);
}
//4) Thong ke so sinh vien theo nam sinh: 1999 -> 2 sinh vien, 2000 -> 1 sinh vien
int count[3];
//Khoi tao gia tri cho mang count
for(i=0;i<3;i++) {
count[i] = 1;
}
for(i=0;i<2;i++) {
if(count[i] == 0) {
continue;
}
for(j=i+1;j<3;j++) {
if(count[j] == 0) {
continue;
}
if(p[i].year == p[j].year) {
count[i]++;
count[j]--;
}
}
}
//Hien thi ket qua thong ke
for(i=0;i<3;i++) {
if(count[i] > 0) {
printf("\nNam sinh %d gom %d sinh vien", p[i].year, count[i]);
}
}
}
void searchByYear(Student p[3]) {
int year, i, count = 0;
printf("\nNhap nam sinh can tim kiem: ");
scanf("%d", &year);
char status[30];
for(i=0;i<3;i++) {
if(p[i].year == year) {
if(count == 0) {
printf("\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
}
count++;
//Hien thi
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
printf("\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
}
if(count == 0) {
printf("\nKhong tim thay sinh vien co nam sinh nay");
}
}
void saveFile(Student *p) {
FILE *fp;
fp = fopen("student.dat", "wb");
if(fp == NULL) {
printf("\nFile error");
} else {
fwrite(p, sizeof(Student), 3, fp);
}
fclose(fp);
printf("\nGhi file thanh cong");
}
void readFile(Student *p) {
FILE *fp;
fp = fopen("student.dat", "rb");
if(fp == NULL) {
printf("\nFile error");
} else {
fread(p, sizeof(Student), 3, fp);
}
fclose(fp);
printf("\nDoc file thanh cong");
}
void saveTextFile(Student *p) {
//Luu du lieu vao file text nhu nao
//Moi sinh vien duoc luu theo dinh dang sao
//Luu nhu option: 2
FILE *fp;
fp = fopen("E:\student.txt", "w");
if(fp == NULL) {
printf("\nFile error");
} else {
//Ghi du lieu vao file
char status[30];
int i;
fprintf(fp, "\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
for(i=0;i<3;i++) {
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
fprintf(fp, "\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
}
fclose(fp);
printf("\nGhi file thanh cong");
}
SỬA LẠI ĐỀ: CHO PHÉP NHẬP SỐ SINH VIÊN CẦN QUẢN LÝ
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
typedef struct Student_ST {
char fullname[30];
char rollNo[10];
int year;
float mark;
} Student;
int N;
void showMenu();
void input(Student *p);
void display(Student *p);
void searchByYear(Student *p);
void saveFile(Student *p);
void readFile(Student *p);
void saveTextFile(Student *p);
int main(int argc, char *argv[]) {
//1) Khai bao mang sinh vien
printf("\nNhap so sinh vien can quan ly: ");
scanf("%d", &N);
Student studentList[N];
char choose;
do {
showMenu();
fflush(stdin); fflush(stdout);
scanf("%c", &choose);
switch(choose) {
case '1': {
input(studentList);
break;
}
case '2': {
display(studentList);
break;
}
case '3': {
searchByYear(studentList);
break;
}
case '4': {
saveFile(studentList);
break;
}
case '5': {
readFile(studentList);
break;
}
case '6': {
saveTextFile(studentList);
break;
}
case 'N':
case 'n':
case '7': {
printf("\nThoat chuong trinh!!!");
break;
}
default: {
printf("\nNhap sai!!!");
break;
}
}
} while(choose != '7' && choose != 'N' && choose != 'n');
return 0;
}
void showMenu() {
printf("\n1. Nhap thong tin sinh vien");
printf("\n2. Sap xep, hien thi, thong ke");
printf("\n3. Tim kiem theo nam sinh");
printf("\n4. Luu student.dat");
printf("\n5. Doc student.dat");
printf("\n6. Luu student.txt");
printf("\n7. Thoat (7 | N | n)");
printf("\nChon: ");
}
void input(Student *p) {
int i;
for(i=0;i<N;i++) {
printf("\nNhap thong tin sinh vien thu %d", i + 1);
printf("\nNhap ten: ");
fflush(stdin); fflush(stdout);
gets(p[i].fullname);
printf("\nNhap MSV: ");
fflush(stdin); fflush(stdout);
gets(p[i].rollNo);
printf("\nNhap nam sinh: ");
scanf("%d", &p[i].year);
printf("\nNhap diem: ");
scanf("%f", &p[i].mark);
}
}
void display(Student *p) {
int i, j;
//1) Sort sinh vien theo diem giam dan
for(i=0;i<N-1;i++) {
for(j=i+1;j<N;j++) {
if(p[i].mark < p[j].mark) {
//doi cho vi tri 2 phan tu
Student tmp = p[i];
p[i] = p[j];
p[j] = tmp;
}
}
}
//2) Hien thi thong tin sinh vien
char status[30];
printf("\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
for(i=0;i<N;i++) {
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
printf("\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
//3) Bao cao thong ke
//Su dung duoc cho duy nhat bai nay
int dCount = 0, cCount = 0, pCount = 0, fCount = 0;
for(i=0;i<N;i++) {
if(p[i].mark >= 7.5) {
dCount++;
} else if(p[i].mark >= 6) {
cCount++;
} else if(p[i].mark >= 4) {
pCount++;
} else {
fCount++;
}
}
if(pCount > 0) {
printf("\nDISTINCTION gom %d sinh vien", dCount);
}
if(cCount > 0) {
printf("\nCREDIT gom %d sinh vien", cCount);
}
if(pCount > 0) {
printf("\nPASS gom %d sinh vien", pCount);
}
if(fCount > 0) {
printf("\nFAIL gom %d sinh vien", fCount);
}
//4) Thong ke so sinh vien theo nam sinh: 1999 -> 2 sinh vien, 2000 -> 1 sinh vien
int count[N];
//Khoi tao gia tri cho mang count
for(i=0;i<N;i++) {
count[i] = 1;
}
for(i=0;i<N-1;i++) {
if(count[i] == 0) {
continue;
}
for(j=i+1;j<N;j++) {
if(count[j] == 0) {
continue;
}
if(p[i].year == p[j].year) {
count[i]++;
count[j]--;
}
}
}
//Hien thi ket qua thong ke
for(i=0;i<N;i++) {
if(count[i] > 0) {
printf("\nNam sinh %d gom %d sinh vien", p[i].year, count[i]);
}
}
}
void searchByYear(Student *p) {
int year, i, count = 0;
printf("\nNhap nam sinh can tim kiem: ");
scanf("%d", &year);
char status[30];
for(i=0;i<N;i++) {
if(p[i].year == year) {
if(count == 0) {
printf("\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
}
count++;
//Hien thi
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
printf("\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
}
if(count == 0) {
printf("\nKhong tim thay sinh vien co nam sinh nay");
}
}
void saveFile(Student *p) {
FILE *fp;
fp = fopen("student.dat", "wb");
if(fp == NULL) {
printf("\nFile error");
} else {
fwrite(p, sizeof(Student), N, fp);
}
fclose(fp);
printf("\nGhi file thanh cong");
}
void readFile(Student *p) {
FILE *fp;
fp = fopen("student.dat", "rb");
if(fp == NULL) {
printf("\nFile error");
} else {
fread(p, sizeof(Student), N, fp);
}
fclose(fp);
printf("\nDoc file thanh cong");
}
void saveTextFile(Student *p) {
//Luu du lieu vao file text nhu nao
//Moi sinh vien duoc luu theo dinh dang sao
//Luu nhu option: 2
FILE *fp;
fp = fopen("E:\student.txt", "w");
if(fp == NULL) {
printf("\nFile error");
} else {
//Ghi du lieu vao file
char status[30];
int i;
fprintf(fp, "\n%3s|%15s|%15s|%5s|%5s|%15s|", "No", "Name", "Roll Number", "Year", "Mark", "Status");
for(i=0;i<N;i++) {
if(p[i].mark >= 7.5) {
strcpy(status, "DISTINCTION");
} else if(p[i].mark >= 6) {
strcpy(status, "CREDIT");
} else if(p[i].mark >= 4) {
strcpy(status, "PASS");
} else {
strcpy(status, "FAIL");
}
fprintf(fp, "\n%3d|%15s|%15s|%5d|%5.2f|%15s|", i + 1, p[i].fullname, p[i].rollNo, p[i].year, p[i].mark, status);
}
}
fclose(fp);
printf("\nGhi file thanh cong");
}Tags:
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