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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <ctype.h>
  4. #include <stdlib.h>
  5.  
  6. #define CUSHION 50 /* for array sizes*/
  7. #define RECLMT 20 /* amount of records */
  8.  
  9. struct book
  10. {
  11.     char title[CUSHION];
  12.     char firstname[CUSHION];
  13.     char lastname[CUSHION];
  14.     char isbn[13]; /*ISBN Number consists of 13 numbers*/
  15.     char publisher[CUSHION];
  16.     char dop[4]; /*only the year needed*/
  17. };
  18.  
  19. struct book Book[RECLMT]; /*20 records*/
  20.  
  21. int populate(void);
  22.  
  23. void welcome_menu(void); /* Options menu */
  24.  
  25. int choice(char);
  26.  
  27. /* MAIN STARTS HERE */
  28. int main()
  29. {
  30.     welcome_menu();
  31.  
  32. 	return 0;
  33. }
  34.  
  35. /* MAIN ENDS HERE */
  36.  
  37. /* start menu */
  38. void welcome_menu(void)
  39. {
  40. 	char p;
  41.     printf("  ******************************************\n");
  42.     printf("  * Welcome to the Mile End Library System *\n");
  43.     printf("  ******************************************\n\n");
  44.     printf("Type the number corresponding\n to your desired action:\n\n");
  45.     printf("1. ADD A BOOK\n2. UPDATE AN EXISTING ENTRY\n3. BOOK SEARCH\n4. PRINT ALL FILE RECORDS\n");
  46. 	printf("\n5. (FOR ADMIN USE ONLY) POPULATE FILE\n\n");/*options keys*/
  47.  
  48. 	p=getchar();
  49. 	choice(p);
  50. }
  51.  
  52.  
  53.  
  54. int populate(void)
  55. {
  56. 	printf("All entries will be saved in the file, books.dat.\n\n" );
  57.  
  58.     int c=0, x=0;
  59.  
  60.    /*  struct book Book[RECLMT]; */
  61.  
  62.     char s;
  63.  
  64.     for(;c<=RECLMT;c++){
  65.  
  66.     printf("Title?\t\t");
  67.  
  68. 	while ( ( s = getchar() ) !='\n' ){
  69.  
  70. 		Book[c].title[ x++ ] = s;
  71. 		}
  72.  
  73. 		Book[c].title[x]='\0';
  74.  
  75.     printf("Author's first name?\t");
  76.  
  77. while ( ( s = getchar() ) !='\n' ){
  78.  
  79. 		Book[c].firstname[ x++ ] = s;
  80. 		}
  81.  
  82. 		Book[c].firstname[x]='\0';
  83.  
  84.     printf("Author's last name?\t");
  85.  
  86.    while ( ( s = getchar() ) !='\n' ){
  87.  
  88. 		Book[c].lastname[ x++ ] = s;
  89. 		}
  90.  
  91. 		Book[c].lastname[x]='\0';
  92.  
  93.     printf("ISBN#:   ");
  94.  
  95.     while ( ( s = getchar() ) !='\n' ){
  96.  
  97. 		Book[c].isbn[ x++ ] = s;
  98. 		}
  99.  
  100. 		Book[c].isbn[x]='\0';
  101.  
  102.  
  103.     printf("Year of publication?\t");
  104.  
  105.     while ( ( s = getchar() ) !='\n' ){
  106.  
  107. 		Book[c].dop[ x++ ] = s;
  108. 		}
  109.  
  110. 		Book[c].dop[x]='\0';
  111.  
  112.     printf("Next book -->\n");
  113.     }
  114.  
  115. struct book *books;
  116. *books = Book ;
  117. FILE *bibPtr; /* file handle */
  118. bibPtr=fopen( "books.dat","w" );
  119. 	if( bibPtr == NULL )
  120. 	{  printf( "No file found.\n" );}
  121. 	else
  122. 	{
  123. 		fwrite(books,sizeof(*Book),RECLMT,bibPtr);	
  124. }
  125. fclose(bibPtr);
  126. }
  127. int choice(char p)
  128. {
  129. 	switch(p)
  130. 	{
  131. 		case '1':
  132. 			break;
  133. 		case '2':
  134. 			break;
  135. 		case '3':
  136. 			break;
  137. 		case '4':
  138. 			break;
  139. 		case '5':
  140. 			populate();
  141. 			break;
  142. 		default:
  143. 			welcome_menu;
  144. 		}
  145. }
  146.  
  147. /* A function to remedy the repeated requests in populate() */
  148.  
  149. /*
  150. *entry(char[],int)
  151. {
  152. 	while ( ( s = getchar() ) !='\n' ){
  153.  
  154. 		Book[c].title[ x++ ] = s;
  155. 		}
  156.  
  157. 		Book[c].title[x]='\0';
  158.  
  159. }
  160. */
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https://ideone.com/vYKgu
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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