# include & lt; stdio.h> 
#include  
#include  

//grade structure 
Struct score 
{
Char ID [11]; 
Char Name [25]; 
Char banji [10]. 
Int gs; 
Int wy. 
Int wl; 
Int cx. 
Int x; 
Int zz. 

}; 

//function declaration 
Void welcome ();//main menu 
Void yl (int);//achievement preview 
Void cx (int);//scores query 
Void what zj had (int);//increase achievement 
Int sc (int);//delete grades 
Int xg (int);//modify result 
Void BCCJ (void);//save scores and exit 
Void showcxmenu (void);//the secondary menu, query menu 
Void XMCX (int n);//query name 
Void XHCX (int);//student id query 
//the main function 
Int main () 
{
Int flag, n=0, count=0;//flag flags, count count, the current total number of 
//-- -- -- -- -- -- -- -- -- -- -- -- -- to determine how many files inside record -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --//
FILE *fp; 
Fp=fopen (" 111. TXT ", "a +"); 
If (fp==NULL) 
{
Printf (" failed to open the file, please try again! \n"); 
getchar(); 
fclose(fp); 
exit(0); 
} 
Int c=0; 
while(! The feof (fp)) 
{
Char cc=fgetc (fp); 
If (EOF) cc==
{
break; 
} 
//output characters 
//putchar (cc); 
C + +; 
} 
The count=c/14; 
//printf (" % d ", count); 
//getch (); 
fclose(fp); 
//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --//
Do 
{
Welcome (); 
The scanf (" % d ", & amp; The flag);//enter 
The switch (flag) 
{
Case 1: printf (" please enter your to input the number of people: "); 
The scanf (" % d ", & amp; n); 
What zj had (n); 
Count +=n; break; 
Case 2: count=sc (count); Printf (" % d ", count); break; 
Case 3: xg (count); break; 
Case 4: cx (count); break; 
Case 5: yl (count); break; 
Case 0: BCCJ (); break; 
Default: printf (" input error, please try again! \n"); Getch (); 
} 
} while (flag!=0); 
Getch (); 
return 0; 
} 

//0 display menu 
Void welcome () 
{
//system (" CLS "); 
Printf (" * * * * * * * * * * * * * welcome to use student achievement management system * * * * * * * * * * * * * * * * * \ n "); 
Printf (" * -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- - * \ n "); 
Printf (" * 1. Input scores * \ n "); 
Printf (" * 2. Delete results * \ n "); 
Printf (" * 3. The modified result * \ n "); 
Printf (" * 4. Scores query * \ n "); 
Printf (" * * 5. According to performance information \ n "); 
Printf (" * * 0. Save the information and exit system \ n "); 
Printf (" * * * * * * * * * * * * * * * * * * * * * * welcome to * * * * * * * * * * * * * * * * * * * * * * * * \ n "); 
Printf (" select operation & lt; 0 to 6 & gt; \n"); 
return; 
} 

//1 increase achievement 
Void what zj had (int n) 
{
Struct score stu [100]. 
FILE *fp; 
Fp=fopen (" 111. TXT ", "a +"); 
If (fp==NULL) 
{
Printf (" failed to open the file, please try again! \n"); 
getchar(); 
fclose(fp); 
exit(0); 
} 
Printf (" please enter all the student's student id, name, class, number of high grades, foreign language performance, physical performance, application result, thought achievement, the achievement; \n"); 
int i; 
for(i=0; i{
Printf (" -- -- the first % d students - \ n ", I + 1); 
Printf (" student number: "); 
The scanf (" % s ", & amp; Stu [I]. ID); 

Printf (" name: "); 
The scanf (" % s ", & amp; Stu [I] Name); 

Printf (" class: "); 
The scanf (" % s ", & amp; Stu [I] banji); 

Printf (" high number grade: "); 
The scanf (" % d ", & amp; Stu [I]. Gs); 

Printf (" foreign language achievement: "); 
The scanf (" % d ", & amp; Stu [I]. Wy); 

Printf (" physical performance: "); 
The scanf (" % d ", & amp; Stu [I]. Wl); 

Printf (" program performance: "); 
The scanf (" % d ", & amp; Cx); stu [I]. 

Printf (" fix performance: "); 
The scanf (" % d ", & amp; Stu [I] sx); 

Printf (" the result: "); 
The scanf (" % d ", & amp; Stu [I]. Zz); 

//write data 
Fprintf (fp, "% s % s % s % d % d % d % d % d % d \ n", stu [I] ID, stu [I]. Name, stu [I] banji, stu [I]. Gs, stu [I]. Wy, stu [I]. Wl, stu [I] cx, stu [I] sx, stu [I] zz); } 
fclose(fp); 
Printf (" add student success, please press any key to return to the \ n "); 
getchar(); 
} 

//delete grades 2 
Int sc (int n) 
{
Struct score stu [100]. 
Struct score sub [99];//delete after the structure of array 
Char ID [10];//student id 
int find=0; 
Printf (" please input you want to delete the student student number: "); 
The scanf (" % s ", & amp; ID); 
FILE *fp; 
Fp=fopen (" 111. TXT ", "r"); 
If (fp==NULL) 
{
Printf (" failed to open the file, please contact your administrator \ n "); 
getchar(); 
return -1; 
} 
Int c=0; 
Int index=0;//used to record the target number 
while(! Feof (fp))//no empty 
{
Fscanf (fp, "% s % s % s % d % d % d % d % d % d \ n", & amp; Stu [c]. ID, & amp; Stu [c]. Name, & amp; Stu [c]. Banji, & amp; Stu [c]. Gs, & amp; Stu [c]. Wy, & amp; Stu [c]. Wl, & amp; Cx, stu [c]. & amp; Stu [c]. Sx, & amp; Stu [c]. Zz); 
If (STRCMP (ID, stu [c]. ID)==0) 
{
The find=1;//according to the student id to find, find assignment 1 
The index=c;//record number 
} 
C + +; 
} 
fclose(fp); 
If (n==0) 
{
Printf (" there is no student achievement information, please press any key to return to the \ n "); 
Getch (); 
Welcome (); 
return n; 
} 
If (find==0) 
{
Printf (" not the student achievement information, please press any key to return to the \ n "); 
Getch (); 
Welcome (); 
return n; 
} 
The else 
{
int i; 
//delete 
for(i=0; i{
If (I & lt; The index) 
{
Sub [I]=stu [I]; 
} 
The else 
{
Sub [I]=stu [I + 1); 
} 
} 

Fp=fopen (" 111. TXT ", "w"); 
//write data 
for(i=0; i{
Fprintf (fp, "% s % s % s % d % d % d % d % d % d \ n", stu [I] ID, stu [I]. Name, stu [I] banji, stu [I]. Gs, stu [I]. Wy, stu [I]. Wl, stu [I] cx, stu [I] sx, stu [I] zz); 
} 
fclose(fp); 
Printf (" the student achievement delete student ID for % s is successful, please press any key to return to the \ n ", ID); 
Getch (); 
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