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C语言学生成绩管理系统C语言学生成绩管理系统――步骤/方法
C语言学生成绩管理系统 1、
/*_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
ssm.c : Students' score manager V 1.01
Copyright (C) 2003 by syuui . All rights reserved .
Red Hat 9.0 , gcc 3.2.2 compiling passed .
Usage : ssm -axnlh [-i [input file]] [-o [output file]]
-a : calculate classes' average score
-x : calculate students' max score
-n : calculate students' min score
-l : list all records
-h : print help page
-i [input file] : read data from [input file]
Default file : in.src
-o [output file] : output result to [output file]
Default file : out.src
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/*/
#include
#include
#define FNAME_LEN 255 //--------------file name length
#define NM_LEN 255 //--------------name length
#define _DFLT_OUT out.src //------default output file name
#define _DFLT_INP in.src //------default input file name
/*-=-=-=-definations of flags-=-=-=-*/
#define LIST 1
#define AVER 2
#define MAX 4
#define MIN 8
#define INPUT 16
#define OUTPUT 32
struct MODEL {
/*-=-=-=- Name -=-=-=-*/
char name[NM_LEN] ;
/*-=-=-=- scores -=-=-=-*/
int c1 , //--------------score 1
c2 , //--------------score 2
c3 , //--------------score 3
c4 , //--------------score 4
c5 , //--------------score 5
total ; //--------------total of score
float aver ; //--------------average of score
struct MODEL *next ; //------link pointer
};
typedef struct MODEL SCORE ;
typedef int FLAG ;
/*-=-=-=-=-=-Function _help-=-=-=-=-=-*/
void _help()
{
fprintf( stderr , n );
fprintf( stderr , _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/nn );
fprintf( stderr , ssm.c : Students' score manager V1.01n );
fprintf( stderr , Copyright (C) 2003 by syuui . All rights reserved .nn );
fprintf( stderr , Usage : ssm -axnlh [-i ] [-o ]n );
fprintf( stderr , -a : calculate classes' average scoren );
fprintf( stderr , -x : calculate students' max scoren );
fprintf( stderr , -n : calculate students' min scoren );
fprintf( stderr , -l : list all recordsn );
fprintf( stderr , -h : print this screenn );
fprintf( stderr , -i [input file] : read data from [input file]n );
fprintf( stderr , default : in.srcn );
fprintf( stderr , -o [output file] : output result to [output file]n );
fprintf( stderr , default : out.srcnn );
fprintf( stderr , _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/nn );
}
/*-=-=-=-=-=-Function push-=-=-=-=-=-*/
/* This function will push a node to link */
/* If this function successfully exited , return 0 */
int push( SCORE **head , //--------------head of the link
const char *dname , //----------student's name
const int dc1 , //--------------score 1
const int dc2 , //--------------score 2
const int dc3 , //--------------score 3
const int dc4 , //--------------score 4
const int dc5 ) //--------------score 5
{
SCORE *tmp ,
*new ; //------new node
/*-=-=-=-Open a node-=-=-=-*/
new = (SCORE *)malloc( sizeof(SCORE) );
/*-=-=-=-Set data-=-=-=-*/
strcpy( new->name , dname );
new->c1 = dc1 ;
new->c2 = dc2 ;
new->c3 = dc3 ;
new->c4 = dc4 ;
new->c5 = dc5 ;
/*-=-=-=-Push node into the link-=-=-=-*/
if( *head == NULL )
{
*head = new ;
(*head)->next = NULL ;
}
else
{
tmp = *head ;
*head = new ;
(*head)->next = tmp ;
}
return 0;
}
/*-=-=-=-=-=-Function class_aver-=-=-=-=-=-*/
/* This function will claculate average score */
/* This function returns number of the records */
int class_aver( SCORE *head , //--------------head of the link
float *ac1 , //--------------average score 1
float *ac2 , //--------------average score 2
float *ac3 , //--------------average score 3
float *ac4 , //--------------average score 4
float *ac5 ) //--------------average score 5
{
float tc1 , tc2 , tc3 , tc4 , tc5 ; //------total of a class
SCORE *pr ;
int n=0 ;
pr = head ;
tc1 = tc2 = tc3 = tc4 = tc5 = 0.0 ;
while( pr != NULL )
{
/*-=-=-=-Claculate total score of each class-=-=-=-*/
tc1 += pr->c1 ;
tc2 += pr->c2 ;
tc3 += pr->c3 ;
tc4 += pr->c4 ;
tc5 += pr->c5 ;
pr = pr->next ;
n++ ;
}
*ac1 = tc1 / n ;
*ac2 = tc2 / n ;
*ac3 = tc3 / n ;
*ac4 = tc4 / n ;
*ac5 = tc5 / n ;
return n ;
}
/*-=-=-=-=-=-Function stu_ttl_aver-=-=-=-=-=-*/
/* This function will claculate average score
and total score for each student */
/* This function returns number of the records */
int stu_ttl_aver( SCORE *head ) //------head of the link
{
SCORE *pr ;
int n = 0 ;
pr = head ;
while( pr != NULL )
{
/*-=-=-=-claculating total-=-=-=-*/
pr->total =
pr->c1 +
pr->c2 +
pr->c3 +
pr->c4 +
pr->c5 ;
/*-=-=-=-claculating average-=-=-=-*/
pr->aver = (float)pr->total / 5.0 ;
n++ ;
pr = pr->next ;
}
return n ;
}
/*-=-=-=-=-=-Function srch_max-=-=-=-=-=-*/
/* This function will search the record
which has the max value of total score */
/* This function returns a SCORE pointer
which points to the result */
SCORE *srch_max( SCORE *head ) //------head of the link
{
SCORE *pr ;
int max ;
pr = head ;
max = -1 ;
while( pr != NULL )
{
/*-=-=-=-search max value-=-=-=-*/
if( pr->total > max )
max = pr->total ;
pr = pr->next ;
}
pr = head ;
while( pr != NULL )
{
/*-=-=-=-search record-=-=-=-*/
if( pr->total == max )
break ;
pr = pr->next ;
}
return pr ;
}
/*-=-=-=-=-=-Function srch_min-=-=-=-=-=-*/
/* This function will search the record
which has the min value of total score */
/* This function returns a SCORE pointer
which points to the result */
SCORE *srch_min( SCORE *head ) //------head of the link
{
SCORE *pr ;
int min ;
pr = head ;
min = 9999 ;
while( pr != NULL )
{
/*-=-=-=-search min value-=-=-=-*/
if( pr->total < min )
min = pr->total ;
pr = pr->next ;
}
pr = head ;
while( pr != NULL )
{
/*-=-=-=-search record-=-=-=-*/
if( pr->total == min )
break ;
pr = pr->next ;
}
return pr ;
}
C语言学生成绩管理系统 2、
/*-=-=-=-=-=-functon main-=-=-=-=-=-*/
int main( int argc , char *argv[] )
{
FILE *fp ; //----------------------I/O file stream
FLAG flag=0 ; //----------------------operations flag
SCORE *head , *pr;
int i , ndata ,
c1 , c2 , c3 , c4 , c5 ;
char in_fname[FNAME_LEN] , //--------input file name
out_fname[FNAME_LEN] , //------output file name
name[NM_LEN] ;
float ac1 , ac2 , ac3 , ac4 , ac5 ;
head = NULL ;
pr = NULL ;
fp = NULL ;
/*-=-=-=-check number of the parameters-=-=-=-*/
if( argc<2 )
{
fprintf( stderr , %s -atxnlh [-i ] [-o ]n , argv[0] );
fprintf( stderr , %s -h to get more help.n , argv[0] );
exit(1);
}
strcpy( in_fname , _DFLT_INP );
strcpy( out_fname , _DFLT_OUT );
/*-=-=-=-get the parameters and mark the flag-=-=-=-*/
for( i=1 ; i {
if( argv[i][0] != '-' )
{
fprintf( stderr , Unknown argument %s .n , argv[i] );
exit(1);
}
else
{
switch( argv[i][1] )
{
case 'h' :
_help();
exit(0);
break ;
case 'l' :
flag |= LIST ;
break ;
case 'a' :
flag |= AVER ;
break ;
case 'x' :
flag |= MAX ;
break ;
case 'n' :
flag |= MIN ;
break ;
case 'i' :
flag |= INPUT ;
i++ ;
if( i >= argc )
break ;
if( argv[i][0] != '-' )
{
/*-=-=-=-get input file name-=-=-=-*/
strcpy( in_fname , argv[i] );
break ;
}
else
{
i-- ;
break ;
}
case 'o' :
flag |= OUTPUT ;
i++ ;
if( i >= argc )
break ;
if( argv[i][0] != '-' )
{
/*-=-=-=-get output file name-=-=-=-*/
strcpy( out_fname , argv[i] );
break ;
}
else
{
i-- ;
break ;
}
default :
fprintf( stderr , Unknown parameter %s .n , argv[i] );
exit(1);
break ;
}
}
}
/*-=-=-=-=-=-Input data-=-=-=-=-=-*/
if( (flag & INPUT) == INPUT )
{
/*-=-=-=-opne input file stream-=-=-=-*/
fp = fopen( in_fname , r );
if( fp==NULL )
{
fprintf( stderr , %s not found or not useable .n , in_fname );
exit(1);
}
}
if( (flag & INPUT) != INPUT )
{
/*-=-=-=-input from keyboard-=-=-=-*/
while( printf( Now input students' score :n ) )
{
if( ( printf( Name : ) , scanf( %s , name)!=1 )
|| ( printf( C1 : ) , scanf( %d , &c1 )!=1 )
|| ( printf( C2 : ) , scanf( %d , &c2 )!=1 )
|| ( printf( C3 : ) , scanf( %d , &c3 )!=1 )
|| ( printf( C4 : ) , scanf( %d , &c4 )!=1 )
|| ( printf( C5 : ) , scanf( %d , &c5 )!=1 ) )
break ;
push( &head, name, c1, c2, c3, c4, c5 ) ;
}
}
else
{
/*-=-=-=-input from file-=-=-=-*/
while( !feof( fp ) )
{
if( fscanf( fp , %s , name ) != 1
|| fscanf( fp , %d , &c1 )!=1
|| fscanf( fp , %d , &c2 )!=1
|| fscanf( fp , %d , &c3 )!=1
|| fscanf( fp , %d , &c4 )!=1
|| fscanf( fp , %d , &c5 )!=1 )
break ;
push( &head, name, c1, c2, c3, c4, c5 ) ;
}
}
if( (flag & INPUT) == INPUT )
{
/*-=-=-=-close input file stream-=-=-=-*/
fclose( fp );
}
/*-=-=-=-claculate total and average score for each student-=-=-=-*/
ndata = stu_ttl_aver( head );
if( (flag & OUTPUT) != OUTPUT )
{
;
/*-=-=-=-Output to screen-=-=-=-*/
}
else
{
/*-=-=-=-Output to file , open output file stream-=-=-=-*/
fp = fopen( out_fname , w );
if( fp==NULL )
{
fprintf( stderr , %s not useable .n , out_fname );
exit(1);
}
}
if( (flag & LIST) == LIST )
{
/*-=-=-=-make a list-=-=-=-*/
pr = head ;
while( pr != NULL )
{
if( (flag & OUTPUT) != 0 )
{
/*-=-=-=-outout to file-=-=-=-*/
fprintf( fp , Name : %sn , pr->name );
fprintf( fp , %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( Name : %sn , pr->name );
printf( %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
pr = pr->next ;
}
}
if( (flag & MAX) == MAX )
{
/*-=-=-=-search max-=-=-=-*/
pr = srch_max( head );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , MAX : %sn , pr->name );
fprintf( fp , %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( MAX : %sn , pr->name );
printf( %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
}
if( (flag & MIN) == MIN )
{ /*-=-=-=-search min-=-=-=-*/
pr = srch_min( head );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , MIN : %sn , pr->name );
fprintf( fp , %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( MIN : %sn , pr->name );
printf( %3d %3d %3d %3d %3dt%4dt%3.2fn ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
}
if( (flag & AVER) == AVER )
{
/*-=-=-=-claculate average value for each class-=-=-=-*/
class_aver( head , &ac1 , &ac2 , &ac3 , &ac4 , &ac5 );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , Average class :n );
fprintf( fp , %3.2ft%3.2ft%3.2ft%3.2ft%3.2fn ,
ac1 , ac2 , ac3 , ac4 , ac5 );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( Average class :n );
printf( %3.2ft%3.2ft%3.2ft%3.2ft%3.2fn ,
ac1 , ac2 , ac3 , ac4 , ac5 );
}
}
if( (flag & OUTPUT)==OUTPUT )
{
/*-=-=-=-close output file stream-=-=-=-*/
fclose( fp );
}
/*-=-=-=-delete link to clear memory-=-=-=-*/
while( head->next != NULL )
{
pr = head->next ;
free( (void *)head );
head = pr ;
}
free( (void *)head );
return 0;
}
/*-=-=-=-end of ssm.c-=-=-=-*/
C语言学生成绩管理系统 3、
贴main函数那部分的时候居然说我贴子里有禁用词！我晕。
查了半天，原来是这么回事。我用的一个变量flag，原来是写的缩写，被当成禁用词了。
继续。下面是测试数据：
SyuuI
100 90 80 97 88
FukataKyouko
99 78 96 99 60
MatudaJyonko
89 90 67 89 95
SakuraiHanamiti
78 98 94 79 100
下面是Makefile
CC = gcc
TAR = ssm
BINPATH = $(HOME)/bin
PROG: .c.o
$(CC) $(TAR).o -o $(TAR)
.c.o:
$(CC) $(TAR).c -c -o $(TAR).o
clean:
rm -f core* *~ *.o
binclean:
rm -f $(TAR)
install:
cp $(TAR) $(BINPATH)C语言学生成绩管理系统――注意事项
本文仅供参考。
