Dữ liệu cấu trúc và Thao tác với tệp trong C _ Quản lí lương nhân viên

#include<stdio.h>#include<conio.h>
#include<string.h>
#include<stdlib.h>
typedef struct Luong{
    char MaNV[10];
    char HT[30];
    float HS;
    int LCB ;
    int Luong ; // He so luong , Luong co ban //
    
};
int main()
{
    char Mnvtim[10];
    Luong*a , t ;
    int n , i, j ;
    FILE*f ; 
    f = fopen("input_ql_luong.txt","rt");
    fscanf(f,"%d\n",&n);
    a = new Luong[n+1];
    for( i = 1 ; i<= n ; i++)
    {
        fgets(a[i].MaNV,10,f);
        j = strlen(a[i].MaNV);
        a[i].MaNV[j-1]='\0';
        
        fgets(a[i].HT,30,f);
        j = strlen(a[i].HT);
        a[i].HT[j-1]='\0';
        
        fscanf(f,"%f\n",&a[i].HS);
        
        fscanf(f,"%d\n",&a[i].LCB);
        
    }
    fclose(f);
    
    // Tinh luong NV , sap xep theo chieu giam dan //
    
    for( i = 1 ; i<= n ; i++)
    {
        a[i].Luong = a[i].HS * a[i].LCB ;
    }
    for( i =1 ; i<=n ; i++)
        for( j = i+1 ; j<= n ; j++)
        {
            if(a[i].Luong < a[j].Luong)
            {
                 t    = a[i] ;
                 a[i] = a[j] ;
                 a[j] = t ;
                
            }
        }
    
    
    
    printf("\n\t ----------- * CHUONG TRINH QUAN LI NHAN VIEN * -----------");
    printf("\n\n\t\t\t DANH SACH LUONG NHAN VIEN \n ");
    printf("\n STT  ||  MA NV   ||     Ho & Ten   || HS luong  || Luong CB  || Luong ");
    for( i = 1 ; i<=n ; i++)
    {
        printf("\n\n %d%10s%20s    %4.2f   %15d  %15d ",i,a[i].MaNV,a[i].HT,a[i].HS,a[i].LCB,a[i].Luong);
    }
    // In thong tin nhan vien co so luong cao nhat //
    
    printf("\n\n Nhan vien co so luong cao nhat la : ");
    printf("\n\n 1. %10s%20s    %4.2f   %15d  %15d ",a[1].MaNV,a[1].HT,a[1].HS,a[1].LCB,a[1].Luong);


    // Tim kiem 1 NV theo Ma Nhan Vien //
    printf("\n\n Nhap Ma nhan vien can tim kiem : ");
    fflush(stdin);
    gets(Mnvtim);
    for( i = 1 ; i<= n ; i++)
    {
        if ( strcmp(a[i].MaNV,Mnvtim)== 0)
        {
            printf("\n\n Ket qua tim la : %10s %30s %15d ",a[i].MaNV,a[i].HT,a[i].Luong);
            break ;
        }
    }
    if( i > n )
        
        printf("\n\n Khong tim thay nhan vien tren ! ");
        
    // In cac NV co so luong > 7000000 //
    printf("\n\n Danh sach nhan vien co so luong > 7 tr la : ");
    for( i= 1 ; i<= n ; i++)
    {
        if( a[i].Luong > 7000000)
        printf("\n\n%d %10s  %30s  %15d ",i,a[i].MaNV,a[i].HT,a[i].Luong);
    }
    
    
}

5NV1Nguyen Van Tinh1.25000000NV2Le Minh An1.57000000NV3Nguyen The Anh1.48000000NV4Dang Van Manh25000000NV5Pham Ngoc Diep14500000

5
NV1Nguyen Van Tinh1.25000000
NV2Le Minh An1.57000000
NV3Nguyen The Anh1.48000000
NV4Dang Van Manh25000000
NV5Pham Ngoc Diep14500000

NV1 Nguyen Van Tinh 1.2 5000000
NV2 Le Minh An 1.5 7000000
NV3 Nguyen The Anh 1.4 8000000
NV4 Dang Van Manh 2 5000000
NV5 Pham Ngoc Diep 1 4500000