tiểu luận lab report exercises kỹ thuật lập trình

BỘ CÔNG THƯƠNGTRƯỜNG ĐẠI HỌC CÔNG NGHIỆP TP HỒ CHÍ MINHLAB REPORT EXERCISESKỸ THUẬT LẬP TRÌNH... Kết quả:Câu 2: Code: Too long to read onyour phone?. Save toread later on yourcomputerSav

BỘ CÔNG THƯƠNG TRƯỜNG ĐẠI HỌC CÔNG NGHIỆP TP HỒ CHÍ MINH

LAB REPORT EXERCISES

KỸ THUẬT LẬP TRÌNH

NỘI DUNG 5: FILE

Câu 1:

Code:

#include <stdio.h>

#include <stdbool.h>

//c

bool isPrime(int n) {

if (n <= 1) {

return false;

}

for (int i = 2; i * i <= n; i++) {

if (n % i == 0) {

return false;

}

}

return true;

}

int main() {

FILE *file;

int n;

//a

file = fopen("array1.txt", "r");

if (file == NULL) {

printf("Khong the mo file!\n");

return 1;

}

fscanf(file, "%d", &n);

int arr[n];

for (int i = 0; i < n; i++) {

fscanf(file, "%d", &arr[i]);

}

fclose(file);

~ 2 ~

printf("Mang doc duoc tu file:\n");

for (int i = 0; i < n; i++) {

printf("%d ", arr[i]);

}

printf("\n");

//c

file = fopen("array1.txt", "a");

if (file == NULL) {

printf("Khong the mo file!\n");

return 1;

}

printf("Cac so nguyen to trong mang va ghi vao file:\n"); for (int i = 0; i < n; i++) {

if (isPrime(arr[i])) {

fprintf(file, "%d ", arr[i]);

printf("%d ", arr[i]);

}

}

printf("\n");

fclose(file);

return 0;

}

~ 3 ~

Kết quả:

Câu 2:

Code:

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#include<conio.h>

#include<stdlib.h>

#include<stdbool.h>

#include<time.h>

#define MAX 100

#define duongdan "E:\\Documents\\KTLT\\BTTH_5_FILE\\test.inp" void SinhMT(int a[MAX][MAX], int d, int c) {

for(int i=0; i<d; i++){

for(int j=0; j<c; j++){

a[i][j] = rand()%100;

}

}

}

void LuuFile(int a[MAX][MAX], int d, int c) {

FILE *f; f=fopen(duongdan, "wt");

if(f==NULL) {

printf("\nKhong tao duoc file.");

getch();

exit(0);

}

fprintf(f, "%d %d\n", d, c);

for(int i=0; i<d; i++){

for(int j=0; j<c; j++){

fprintf(f, "%d\t", a[i][j]);

}

fprintf(f, "\n");

}

fclose(f);

}

void DocFile(int a[MAX][MAX], int &d, int &c) {

FILE *f; f=fopen(duongdan, "rt");

if(f==NULL) {

printf("\nKhong mo duoc file.");

getch();

exit(0);

}

fscanf(f,"%d%d",&d, &c );

for(int i=0; i<d; i++){

for(int j=0; j<c; j++){

fscanf(f,"%d", &a[i][j]);

}

~ 5 ~

fclose(f);

}

void XuatMT(int a[MAX][MAX], int d, int c) { {

for(int i = 0; i < d; i++)

{

for(int j = 0; j < c; j++)

printf("%d\t", a[i][j]);

printf("\n");

}

}

}

int main(){

srand(time(NULL));

int a[MAX][MAX], d=5, c=6;

int b[MAX][MAX], x, y;

SinhMT(a, d, c);

LuuFile(a, d, c);

DocFile(b, x, y);

XuatMT(b, x, y);

return 0;

}

Kết quả:

~ 6 ~

Câu 3:

Code:

#include <stdio.h>

#include <stdlib.h>

#include <conio.h>

~ 7 ~

#define MAX 100

void Nhap(int arr[], int n){

if(n==0)

return;

Nhap(arr,n-1);

printf("Nhap gia tri cho mang thu %d : ", n-1); scanf("%d", &arr[n-1]);

}

void LuuFile(int arr[], int n){

FILE* f=fopen("NguyenAm.txt","wt"); if(f==NULL){

printf("Khong tao duoc file"); getch();

exit(1);

}

for(int i=0; i<n; i++){

fprintf(f, "%d\t", arr[i]);

}

fclose(f);

}

void DocFile(int arr[], int n){

FILE* f=fopen("NguyenAm.txt", "rt");

~ 8 ~

if(f==NULL){

printf("Khong the mo file");

getch();

exit(1);

}

for(int i =0; i<n; i++){

fscanf(f,"%d", &arr[i]);

}

fclose(f);

}

void Xuat(int arr[], int n){

printf("Cac ky tu nguyen am doc duoc tu file: "); for(int i=0; i<n; i++){

printf("%d ", arr[i]);

}

}

int main(){

int a[MAX];

int n;

printf("Nhap so luong ky tu (n<=100): "); scanf("%d", &n);

~ 9 ~

LuuFile(a,n);

DocFile(a,n);

Xuat(a,n);

return 0;

}

Kết quả:

~ 10 ~

Câu 4:

Code:

#include <stdio.h>

~ 11 ~

#include <stdlib.h>

#include <conio.h>

#define MAX 100

typedef struct HH{

char mh[6];

int sl;

float dg;

float st = sl * dg;

};

void Nhap1HH(HH &a){

fflush(stdin);

printf("Ma Hang: "); gets(a.mh); printf("So Luong: "); scanf("%d", &a.sl); printf("Don Gia: "); scanf("%f", &a.dg); printf("So Tien: "); scanf("%f", &a.st);

}

void NhapDSHH(HH a[], int n){

if(n==0)

return;

~ 12 ~

NhapDSHH(a, n-1);

printf("\nNhap thong tin hang hoa thu %d\n", n);

Nhap1HH(a[n-1]);

}

void LuuFile(HH a[], int n){

FILE* f=fopen("DSHH.txt","w");

if(f==NULL){

printf("Khong tao duoc file");

getch();

exit(1);

}

fprintf(f, "Danh sach hang hoa:\n");

fprintf(f, "Ma hang\t\tSo luong\tDon gia\t\tSo tien\n");

for(int i=0; i<n; i++){

fprintf(f,"%s\t\t%d\t\t%.1f\t\t%.1f\n", a[i].mh, a[i].sl, a[i].dg, a[i].st); }

fclose(f);

}

void Xuat1HH(HH a)

{

printf("%s\t\t%d\t\t%.1f\t\t%.1f\n",a.mh, a.sl, a.dg, a.st);

~ 13 ~

void XuatDSHH(HH a[], int n)

{

for(int i = 0; i<n; i++)

Xuat1HH(a[i]);

}

int main(){

HH b[MAX];

int n;

printf("Nhap so luong ky tu (n<=100): "); scanf("%d", &n);

NhapDSHH(b,n);

LuuFile(b,n);

printf("\nDanh sach hang hoa:\n");

printf("Ma hang\t\tSo luong\tDon gia\t\tSo tien\n"); XuatDSHH(b,n);

return 0;

}

Kết quả:

~ 14 ~

Câu 5:

Code:

#include <stdio.h>

#include <stdlib.h>

#include <conio.h>

~ 15 ~

typedef struct PERSON {

unsigned int code;

char firstname[32];

char lastname[32];

char address[32];

char birthday[9];

};

void Output(PERSON person) {

printf("%s %s\n", person.firstname, person.lastname); printf("Address: %s\n", person.address);

printf("Birthday: %s\n", person.birthday);

printf("Code: %u\n\n", person.code);

}

int main() {

FILE *f;

char line[200];

PERSON person;

f = fopen("PERSON.DAT", "r");

if (f == NULL) {

~ 16 ~

perror("Khong the mo file");

getch();

exit(1);

}

while (fgets(line, 200, f) != NULL) {

sscanf(line, "%u:%[^,], %[^:]:%[^\n]\n", &person.code, &person.firstname,

&person.address, &person.birthday);

Output(person);

}

fclose(f);

return 0;

}

Kết quả:

~ 17 ~