tiểu luận lab report exercises kỹ thuật lập trình

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<b>BỘ CÔNG THƯƠNG</b>

<b>TRƯỜNG ĐẠI HỌC CÔNG NGHIỆP TP HỒ CHÍ MINH</b>

<b>LAB REPORT EXERCISES</b>

<b>KỸ THUẬT LẬP TRÌNH</b>

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<b>NỘI DUNG 5: FILE</b>

<b>Câu 1: Code: </b>

#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;

fclose(file);

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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;}

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<b>Kết quả:</b>

<b>Câu 2: Code: </b>

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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]);}

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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; }

<b>Kết quả:</b>

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<b>Câu 3:</b>

#include <stdio.h>#include <stdlib.h>#include <conio.h>

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#define MAX 100void 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();

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");

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if(f==NULL){

printf("Khong the mo file");getch();

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);

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Nhap(a,n);LuuFile(a,n);DocFile(a,n);Xuat(a,n);return 0;}

<b>Kết quả:</b>

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<b>Câu 4: Code:</b>

#include <stdio.h>

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#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);

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

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);

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int main(){HH b[MAX];int n;

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

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

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

return 0;}

<b>Kết quả:</b>

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<b>Câu 5: Code:</b>

#include <stdio.h>#include <stdlib.h>#include <conio.h>

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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) {

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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;}

<b>Kết quả:</b>

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