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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int unique_id() {
  5.     static int last_id = 0;
  6.     return ++last_id;
  7. }
  8.  
  9.  
  10.  
  11.  
  12.  
  13. void registerStudent(int n, char (name)[n][100], char (dob)[n][11], char (address)[n][100], char (contact_no)[n][11], int student_id[n]) {
  14.     for (int i = 0; i < n; i++) {
  15.         printf("Enter the details of student %d:\n", i + 1);
  16.  
  17.         printf("Enter the name:\n");
  18.         scanf("%99s", name[i]);
  19.         while (getchar() != '\n'); // Clear the input buffer
  20.  
  21.         printf("Enter the dob (YYYY/MM/DD)(including slash):\n");
  22.         scanf("%10s", dob[i]);
  23.         while (getchar() != '\n'); // Clear the input buffer
  24.  
  25.         printf("Enter the address:\n");
  26.         scanf("%99s", address[i]);
  27.         while (getchar() != '\n'); // Clear the input buffer
  28.  
  29.         printf("Enter the contact no:\n");
  30.         scanf("%10s", contact_no[i]);
  31.         while (getchar() != '\n'); // Clear the input buffer
  32.  
  33.         student_id[i] = unique_id();
  34.  
  35.     }
  36.  
  37. }
  38. void student_display(int n, char (name)[n][100], char (dob)[n][11], char (address)[n][100], char (contact_no)[n][11], int student_id[n])
  39. {
  40. for (int i = 0; i < n; i++) {
  41.         printf("%99s \n", name[i]);
  42.         printf("%10s \n", dob[i]);
  43.         printf("%99s \n", address[i]);
  44.         printf("%10s \n", contact_no[i]);
  45.         printf("%d \n",student_id[i]);
  46.     }   
  47.  
  48. }
  49. void student_update(int search,int n, char (name)[n][100], char (dob)[n][11], char (address)[n][100], char (contact_no)[n][11], int student_id[n])
  50. {
  51.     int count=-1; 
  52.     for(int i=0;i<n;i++)
  53.     {
  54.         if(search==student_id[i])
  55.         count=i;
  56.     }
  57.     if(count>-1)
  58.     {
  59.         printf("the student record you wanted to update are found \n");
  60.         printf("Enter the details of student :\n");
  61.  
  62.         printf("Enter the name:\n");
  63.         scanf("%99s", name[count]);
  64.         while (getchar() != '\n'); 
  65.  
  66.         printf("Enter the dob (YYYY/MM/DD)(including slash):\n");
  67.         scanf("%10s", dob[count]);
  68.         while (getchar() != '\n'); 
  69.  
  70.         printf("Enter the address:\n");
  71.         scanf("%99s", address[count]);
  72.         while (getchar() != '\n'); 
  73.  
  74.         printf("Enter the contact no:\n");
  75.         scanf("%10s", contact_no[count]);
  76.         while (getchar() != '\n'); 
  77.     }
  78.     else
  79.     printf("the student id does not exist");
  80.  
  81. }
  82. void student_search(char search[100], int n, char name[n][100], char dob[n][11], char address[n][100], char contact_no[n][11], int student_id[n])
  83. {
  84.     int count[100] = { -1 };
  85.     int i;
  86.  
  87.     for (i = 0; i < n; ++i)
  88.     {
  89.         if (strcmp(search, name[i]) == 0)
  90.         {
  91.             count[i] = 1;
  92.         }
  93.     }
  94.     for(i=0;i<n;i++)
  95.     {
  96.         printf("the student details are given by \n");
  97.         if(count[i]==1)
  98.         {
  99.            printf("%99s \n", name[i]);
  100.            printf("%10s \n", dob[i]);
  101.            printf("%99s \n", address[i]);
  102.            printf("%10s \n", contact_no[i]);
  103.            printf("%d \n",student_id[i]); 
  104.         }
  105.     }
  106. }
  107.  
  108.  
  109.  
  110.  
  111.  
  112.  
  113.  
  114. int main() {
  115.     int max_students, i,id;
  116.     printf("Enter the total number of students registered this year:");
  117.     scanf("%d", &max_students);
  118.  
  119.     // Arrays to store student details
  120.     char name[max_students][100];
  121.     char dob[max_students][11];
  122.     char address[max_students][100];
  123.     char contact_no[max_students][11];
  124.     int student_id[max_students];
  125.     char search[100];
  126.     char ch;
  127.     printf("Enter 1 to register the students, 2 for updating a student's details, 3 for searching the number of students with the same name, 4 for displaying the database, and 5 for exiting: ");
  128.     do {
  129.  
  130.         if (scanf(" %c", &ch) != 1) {
  131.             while (getchar() != '\n');
  132.             continue;
  133.         }
  134.  
  135.         switch(ch) {
  136.             case '1':
  137.                 registerStudent(max_students, name, dob, address, contact_no, student_id);
  138.                 break;
  139.             case '2':
  140.                 printf("Enter the student id to be searched: ");
  141.                 scanf("%d", &id); 
  142.                 while (getchar() != '\n');
  143.                 student_update(id,max_students, name, dob, address, contact_no, student_id);
  144.                 break;
  145.             case '3':
  146.                 printf("Enter the name to be searched:\n");
  147.                 scanf("%99s", search);
  148.                 while (getchar() != '\n');
  149.                 student_search(search,max_students, name, dob, address, contact_no, student_id);
  150.                 break;
  151.             case '4':
  152.                 student_display(max_students, name, dob, address, contact_no, student_id);
  153.                 break;
  154.             default:
  155.                 if (ch != '\n' && ch != ' ') { 
  156.                     printf("Incorrect option\n");
  157.                 }
  158.                 break;
  159.         }
  160.         if (ch != '5') {
  161.             printf("Enter another option (or '5' to exit): ");
  162.         }
  163.     } while (ch != '5');
  164.  
  165.  
  166.  
  167.  
  168.     return 0;
  169. }
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https://ideone.com/2XWRGI
language:
C (gcc 8.3)
created:
30 days ago
visibility:
public

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