Student information Management system of C language course design

#include "stdio.h"//Standard input Output function file Header description # include "MATH.H"//Math Function Header Description # include "String.h" #include "stdlib.h"    Using the function in the head of the function, change the console background and color # include "windows.h"//header file declaration, the following is used to change the console width and height # # 100//Macro definition description struct student{     struct defines and declares Char name[25];     Name Char num[25];    Study number char credit[20];    Social Security Number char native[35];     Birthplace Char tel[25];     mobile number int special;      professional int Banji;   class int math,yy,wl,cyy,pe;     Mathematics, English, physics, C language, sports double Ave;}; Declaration of the average//**************************************** function ********************************************void input (     struct student stu[m]);     Input function void output (struct student stu[m]);    Declaration of various types of user-defined functions void lookfor (struct student stu[m]);     query function void Modify (struct student stu[m]);     Modify the function void order (struct student stu[m]);   sort function void delete_student (struct student stu[m]);     Delete function void Xuehao (struct student stu[m]); void xingming (struct student stu[m]), void Fileread (struct student stu[m]); void FileWrite (strUCT student stu[m]); void Yanshi (char *p); Delay Function Description//**********************************************************************************************int       Count=0;struct Student T;int Main () {int choice,sum;struct student stu[m];        System ("mode con:cols=400 lines=30000");      Adjust the width and height of the console system ("Color 0b"); Adjust the background and font color of the console Point1:sum=0;yanshi ("\t\t\t\t\t\t\t\t\3\3\3\3\3\3\3\3\3\3\3\3\3 welcome you to use the Student information management system \3\3\3\3\3\3\3\3\3\ 3\n ");d o {printf (" \t\t\t\t\t\t\t\t-------------------------------------------------\ n ");p rintf (" \t\t\t\t\t\t\t\ t+ Student Information Management System +\n ");p rintf (" \t\t\t\t\t\t\t\t-------------------------------------------------\ n ");p rintf (" \t\t\t\t \t\t\t\t\t\t ***************\n ");p rintf (" \t\t\t\t\t\t\t\t\t\t 1, add student information \ n ");p rintf (" \t\t\t\t\t\t\t\t\t\t 2, browse student information \ n ");p rintf (" \t\t\t\t\t\t\t\t\t\t 3, inquiry student information \ n ");p rintf (" \t\t\t\t\t\t\t\t\t\t 4, modify student information \ n ");p rintf (" \t\t\t\t\t\t\t\t \t\t 5, delete student information \ n ");p rintf (" \t\t\t\t\t\t\t\t\t\t 6, arranging student information \ n "); printf ("\t\t\t\t\t\t\t\t\t\t 7, read file student \ n");//read printf from a file ("\t\t\t\t\t\t\t\t\t\t 8, save to file \ n");   Save to file printf ("\t\t\t\t\t\t\t\t\t\t 9, exit system \ n"); printf ("\t\t\t\t\t\t\t\t\t\t ***************\n");       printf ("Please enter your choice \ n"); scanf ("%d", &choice); Fflush (stdin); Clears the input buffer if (choice>9| |        choice<=0) {sum++;if (sum>=5) {printf ("The number of input errors is too many, the program will restart \ n"); system ("pause");   Program pauses system ("CLS"); Clear screen statement goto Point1;}}       Switch (choice)///depending on the selection, call different functions to accomplish different tasks {case 1:input (STU); Case 2:output (STU); Break;case 3:lookfor (Stu); Break;case 4:modify (Stu); Break;case 5:delete_student (Stu); Break;case 6 : Order (Stu); Break;case 7:fileread (Stu); Break;case 8:filewrite (Stu); Break;case 9:printf ("Thank you for using the Student Information Management system, please turn off the program!!! \ n "); system (" pause "); break;default:printf (" Invalid selection!!! Please re-enter!!! \ n "); break;}} while (choice!=9);p rintf ("the program was over!!! \ n "); return 0;} void input (struct student stu[m])//Custom input function {int Len,size;system ("cls");p rintf ("Please add information to enter students \ n");d o {printf ("Enter by 11 digits   The student number of the composition "\ n"); Do-while loop application, prompting the number of input digits for a certain number of scanf ("%s", &stu[count].num); Len=strlen (Stu[count].num);}   while (len!=11);p rintf ("Please enter the name of the classmate \ n"), scanf ("%s", Stu[count].name);d o {printf ("Please enter a student ID number consisting of 18 digits \ n"); Ibid. scanf ("%s", &stu[count].credit); Size=strlen (Stu[count].credit);} while (size!=18);p rintf ("Please enter the student's place of Origin \ n"), scanf ("%s", &stu[count].native);p rintf ("Please enter the student's mobile phone number \ n"); scanf ("%s",  &stu[count].tel);p rintf ("Please enter the required professional code: 1, Computer science 2, communications Engineering 3, network engineering \ n"); Using this method solves the difficulty of professional input scanf ("%d", &stu[count].special);p rintf ("Please enter the corresponding student class number: 1, 1301 2, 1302 \ n"); scanf ("%d",& Stu[count].banji);d o {printf ("Please enter not more than 100 students ' grades \ \") scanf ("%d%d%d%d%d", &stu[count].math,&stu[count].yy , &stu[count].wl,&stu[count].cyy,&stu[count].pe);} while (stu[count].math>100| | stu[count].yy>100| | stu[count].wl>100| | stu[count].cyy>100| |   STU[COUNT].PE&GT;100);       Ibid. stu[count].ave= (stu[count].math+stu[count].yy+stu[count].wl+stu[count].cyy+stu[count].pe)/5.0; Find the average count++;} void output (struct student stu[m])//Custom output function {int J;system ("CLS"); if (count==0) {printf ("Current saved student information is 0 \ n"); rEturn;} for (j=0;j<count;j++) {printf ("\t\t" name \t\t ID # \ t native number \ t phone number \t\t professional \t\t class \ t math \ t english \ \ Physical \TC language \ t sports \ t \ n "); for (j=0;j <count;j++) {//for loop control output number printf ("%s\t", Stu[j].num);p rintf ("%s\t", Stu[j].name);p rintf ("%s\t", Stu[j].credit) ;p rintf ("%s\t", stu[j].native);p rintf ("%s\t", Stu[j].tel), if (stu[j].special==1) printf ("Computer science \ T"); else if (stu[j].    special==2) printf ("Communications engineering \ T");      else printf ("Network engineering \ T"); printf ("%d\t", Stu[j].banji);p rintf ("%d\t", Stu[j].math);p rintf ("%d\t", Stu[j].yy);p rintf ("%d\t", STU[J].WL); printf ("%d\t", Stu[j].cyy);p rintf ("%d\t", stu[j].pe);p rintf ("%.1lf\t\n", Stu[j].ave);}}} void lookfor (struct student stu[m])//Custom query Student information function {int J,flag=0;char xh[25];system ("CLS"); if (count==0) {p rintf ("The current saved student information is 0 and cannot be queried!!! \ n "); return;} else{printf ("Please enter the student number you want to see \ n"), scanf ("%s", &xh), Fflush (stdin), for (j=0;j<count;j++) {if (strcmp, XH)////(==0)//through the character function to compare the deposited student information, find out the students to view {printf ("Student number \t\t name \t\t ID number \ t" T-phone number \t\t professional \t\t class \ t math T-English \ t physical \TC language \ t sports \ t average score \ n ");printf ("%s\t", Stu[j].num);p rintf ("%s\t", Stu[j].name);p rintf ("%s\t", Stu[j].credit);p rintf ("%s\t", stu[j].native)    ;p rintf ("%s\t", Stu[j].tel), if (stu[j].special==1) printf ("Computer science \ T"), else if (stu[j].special==2) printf ("Communication engineering \ T");     else printf ("Network engineering \ T");p rintf ("%d\t", Stu[j].banji); Consider an alignment factor of printf ("%d\t", Stu[j].math);p rintf ("%d\t", Stu[j].yy);p rintf ("%d\t", STU[J].WL);p rintf ("%d\t", Stu[j]. CYY);p rintf ("%d\t", stu[j].pe);p rintf ("%.1lf\t", Stu[j].ave);}} if (j==count) printf ("Sorry, there is no student information you need \ n");}} void Modify (struct student stu[m])//Custom modify function {int J,flag=0,course;char xh[25];system ("CLS"); if (count==0) {printf (" There are 0 currently saved student information and cannot be modified!!! \ n "); return;} else{printf ("Please enter the student number you want to modify \ n"), scanf ("%s", &xh), Fflush (stdin); for (j=0;j<count;j++) if (strcmp (Stu[j].num), XH) ==0)//ibid. {printf ("Are you sure you want to change the student's information??? If you are not sure, please turn off this program!!! \ n ");p rintf (" Select course: 1, Math 2, English 3, physical 4, C 5, sports \ n ") scanf ("%d ", &course);p rintf (" Please enter the student score you want to modify \ n "); switch (course) { Case 1:scanf ("%d", &stu[j].math), Break;case 2:scanf ("%d", &stu[J].YY); break; Switch Control statement case 3:SCANF ("%d", &AMP;STU[J].WL), Break;case 4:scanf ("%d", &stu[j].cyy), Break;case 5:scanf ("%d", &AMP;STU[J].PE); break;default:printf ("Invalid selection!!! Please re-enter!!! \ n "); }}}void delete_student (struct student stu[m])//Custom delete function {int Choice;system ("CLS"); if (count==0) {printf ("Current saved student information is 0, Cannot delete!!! \ n "); return;} else{printf ("Please select the way you want to delete: 1, number 2, name (if your name is Chinese, you can not delete, please select the number to delete) 3, cancel \ n"); scanf ("%d", &choice); switch (choice)//         The switch statement selects the way the user wants to delete {case 3:return;break;case 2:xingming (STU); Apply Case 1:xuehao (STU) between user-defined functions, break;default:printf ("Invalid selection!!! Please re-enter!!! \ n "); break;}} void order (struct student stu[m])//The definition of the sort function {int J,k,choice,index;system ("cls");p rintf ("Enter the way you want to sort (all sorts are in descending order)!! !\n ");p rintf (" 1, Math 2, English 3, physical 4, C 5, sports 6, average \ n "); scanf ("%d ", &choice); switch (choice) {Case 1:for (j=0;j<count;j + +) {index=j; for (k=j+1;k<count;k++) if (stu[k].math>stu[index].math) {T=stu[k];stu[k]=stu[index];stu[ind     ex]=t;}};break;case 2:for (j=0;j<count;j++) {index=j; for (k=j+1;k<count;k++) if (stu[k].yy>stu[index].yy) {s Tu[k]=stu[index];} The whole for the sort part, using the so-called choice of sorting Method};break;case 3:for (j=0;j<count;j++) {index=j; for (k=j+1;k<count;k++) if (stu[k     ].WL&GT;STU[INDEX].WL) {t=stu[k];stu[k]=stu[index];stu[index]=t;}    };break;case 4:for (j=0;j<count;j++) {index=j; for (k=j+1;k<count;k++) if (STU[K].CYY&GT;STU[INDEX].CYY)     {t=stu[k];stu[k]=stu[index];stu[index]=t;} };break;case 5:for (j=0;j<count;j++) {index=j; for (k=j+1;k<count;k++) if (stu[k].pe>stu[index].pe) {T     =stu[k];stu[k]=stu[index];stu[index]=t;}    };break;case 6:for (j=0;j<count;j++) {index=j; for (k=j+1;k<count;k++) if (stu[k].ave>stu[index].ave)   {t=stu[k];stu[k]=stu[index];stu[index]=t;} Forcing a type conversion symbol can only be used with operands, depending on the type conversion problem in the assignment operation};break;default:printf ("Invalid selection!!! Please re-enter!!! \ n "); break;}} void Xuehao (struct student stu[m])//Custom Delete student information function {int by learning number methodJ,index=0,k=count;char Xh[25];system ("CLS");p rintf ("Please enter the student number you want to delete \ n"), scanf ("%s", XH); Fflush (stdin); for (j=0;j <count;j++) {if (strcmp (STU[J].NUM,XH) ==0) {for (j=index;j<count;j++) stu[j]=stu[j+1];count--;if (count<k) printf ("You have deleted the success \ n");} index++;} if (j==count) printf ("Sorry!!! Without the student information you need to delete!*_*!\n ");} void xingming (struct student stu[m])//Customize delete student information by name the function {int Flag=0,j,k=count;char xm[25];system ("CLS");p rintf (" Please enter the name of the student you wish to delete \ n "), scanf ("%s ", XM), Fflush (stdin); for (j=0;j<count;j++) {if (strcmp (STU[J].NUM,XM) ==0) { flag-1;j<count;j++) stu[j]=stu[j+1];count--;if (count<k) printf ("You have deleted the success \ n");} flag++;} if (j==count) printf ("Sorry!!! Without the student information you need to delete!*_*!\n ");} void Yanshi (char *p)//delay function definition {while (1) {if (*p!=0) printf ("%c", *p++); elsebreak;               Sleep (100); Delay control discontinuity Statement}}void filewrite (struct student stu[m])//write file function definition {int J=0;char c; FILE *fp;printf ("Please select whether you want to deposit the student information you have entered: ' Y ' or ' n '??? \ n "); scanf ("%c ", &c); Fflush (stdin); while (c!= ' y ' &&c!= ' n ') {if (c!= ')Y ' &&c!= ' n ') printf ("Input error, re-enter \ n");p rintf ("The following actions will overwrite the stored data, make sure to enter ' y ' or ' n '??? \ n "); scanf ("%c ", &c); Fflush (stdin);} if (c== ' y ') {if ((Fp=fopen ("D:\\stu.dat", "WB") ==null) {printf ("File open error, program cannot do \ n"); exit (0);} for (j=0;j<count;j++) {fwrite (&stu[j],sizeof (struct student), 1,FP);} Fclose (FP), if (count==0) printf ("No file, cannot save \ n"), elseprintf ("data store complete \ n"); system ("pause"); Elsereturn;} void Fileread (struct student stu[m])//Read file information function definition {int J=0;char c; FILE *fp;system ("CLS");p rintf ("Select whether you want to deposit the student information you have entered: ' Y ' or ' n '??? \ n "), scanf ("%c ", &c), Fflush (stdin), while (c!= ' y ' &&c!= ' n ') {if (c!= ' y ' &&c!= ' n ') printf (" Input error, Please re-enter \ n ");p rintf (" The following actions will overwrite the stored data, make sure to enter ' y ' or ' n '??? \ n "); scanf ("%c ", &c); Fflush (stdin);} if (c== ' y ') {if ((Fp=fopen ("D:\\stu.dat", "RB") ==null) {printf ("File open error, program cannot do \ n"); exit (0);} Fread (&stu[j],sizeof (struct student), 1,FP); Count=0;count++;j++;while (fread (&stu[j],sizeof (struct student), 1,FP)) {j++;count++;} Fclose (FP);p rintf ("Data read!!! \ n "); system (" Pause ");} Elsereturn;}

Student information Management system of C language course design