Shulou(Shulou.com)06/01 Report--

C language programming report

After the last plane game production, I feel that C language programming is more interesting, and it also makes me have a deeper understanding and understanding of this course. This time we learned how to learn C language operation files to permanently save data and how to write large-scale structured programs based on functions. This study is also a little more complicated than last time.

What we need to do this time is a management system for books. It can make it more convenient for us to use the program to find the location of books and some basic information.

First, establish the basic function formula:

# include "stdio.h"

# include "stdlib.h"

# include "string.h"

# include "conio.h"

# define PAGE 3

# define MAX 1000

# define N 5

Int kryp0

/ * structure type * /

Then define the variables we want to design and find:

Typedef struct

{int num;/* Book number * /

Char name [50]; / * name * /

Char type [40]; / * Type * /

Int time;/* publication time * /

Char place [50]; / * location * /

Char writer [50]; / * author * /

} STUDENTS

These two steps are very important for the production of the database, and they are also the foundation and foundation of the whole program, so these two steps must not go wrong or they will not be carried out later. From then on, the production of the database really began.

Int read_file (STUDENTS stu [])

{FILE * fp

Int iTunes 0

If ((fp=fopen ("stu.txt", "rt")) = = NULL)

{printf ("\ n\ n* inventory file does not exist! please create")

Return 0

}

While (feof (fp)! = 1)

{

Fread (& stub [I], sizeof (STUDENTS), 1meme FP)

If (StuI] .num = = 0)

Break

Else

ITunes +

}

Fclose (fp)

Return i

}

Void save_file (STUDENTS stu [], int sum)

{FILE*fp

Int i

If ((fp=fopen ("stu.txt", "wb")) = = NULL)

{printf ("file write error!\ n")

Return

}

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