Simple C language Student performance management system

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Readme file

5 students, the number of words outside, four physical results.
1, the total score of each person, the average
2, the average score of all students ' subjects,
3. Sort bubbles by total score or select sort
4. Input results, result form
5, subscript method, pointer method

Structure array represents students, students (student number, name, language, mathematics, English, physics, total score, average)
Enter and add scores to the array, waiting for sorting
Output results
Dispersed into functions-file

Main.c

#include <stdio.h>/*main.c *os:debian-linux *compile:gcc *date:2015-06-24 * *  */typedef struct returnvalue array;struct  student{    char  num[20];    char name[20];    int chinese;     int math;    int english;    int physical;     float score;    float average;} stu[5]=    {        {"1101", "Zhang Yi", 0,0,0,0,0,0},         {"1102", "Li er",0,0,0,0,0,0},         {"1103", "Liu San", 0,0,0,0,0,0},        {"1104", "Zhao Si", 0,0,0,0,0,0 },        {"1105", "Money Five",0,0,0,0,0,0}    };     int bs[5]={0,1,2,3,4};&Nbsp;       void mainmenu () {    printf ("Please enter score: \ n") ;} Void inputscore () {    int i;    for (i=0;i<5;i++)   &NBSP;&NBSP;&NBSP;{&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%d", &stu[i].chinese);  &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%d", &stu[i].math);       &NBSP;&NBSP;SCANF ("%d", &stu[i].english); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%d",& stu[i].physical);             }}void printall ( {    int j;    printf ("School number   name   language   math   English   Physical    total     average \ n ");     for (j=0;j<5;j++)     {                 printf ("%s  %s %4d %4d %4d %4d %4.1f %6.1f \n ",         stu[j].num,         stu[j].name,         stu[j].chinese,        stu[j].math,         stu[j].english,        stu[j].physical,   &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;STU[J].SCORE,&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;STU[J]. average);         printf ("--------------------------------------------\ n ");     }}void sumave () {    int k;     for (k=0;k<5;k++)     {        stu[k].score  = stu[k].chinese+stu[k].math+stu[k].english+stu[k].physical;                 stu[k].average = stu[k].score/4;    }     }void bubblesort () {          int temp=  0; //Intermediate Variable       int l,m;      //bubble method ordering     for (l=0;l<5;l++)       {           for (m=l+1;m<5;m++)          {               if (stu[bs[l]].score  > stu[bs[m]].score)                 {                   temp = bs[l];                   bs[l] = bs[m];                   bs[m] = temp;               }          }       }    }void printallafterbubblesort () {         printf ("After sorting by total: \ n");             int n;    printf ("School number   name   language   Math   English   physics    Total     average \ n ");     for (n=0;n<5;n++)     {                 printf ("%s %s % 4d %4d %4d %4d %4.1f %6.1f \n ",         Stu[bs[n]].num,  &nbSp;     stu[bs[n]].name,        stu[bs[n]]. chinese,        stu[bs[n]].math,         stu[bs[n]].english,        stu[bs[n]].physical,         stu[bs[n]].score,        stu [Bs[n]].average);         printf ("------------------------------------- -------\ n ");    }                             printf ("\ n");} Int main () {MainMenu (); Inputscore (); Sumave (); Printall (); Bubblesort (); Printallafterbubblesort (); return 0;}

The code is very rough, please advise ...

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Simple C language Student performance management system