Project Due Need Help
Hi I am doing a project using binary files.I've wrote a small bit of code with no compile errors.I'm using Dev-C++ compiler(If you know a better free one please tell me)When I run it the command prompt opens and closes straight away and I don't know why This has happened me before but I need this project done VERY SOON!! can anyone help?!?This is the code I've written.
It's planned to be a banking system If anyone has Ideas for this I would also like to hear them.Thanks for listening. I did a bit of debugging and came up with this,
in the load() method here ->
Can Anyone help PLEASE!!!!!!Code:1. #include <stdio.h> 2. #include <string.h> 3. #include <stdlib.h> 4. 5. 6. #define MAX 100 7. 8. 9. int menu(void); 10. int display(int i); 11. void customer_search(void); 12. void AccNo_search(void); 13. void enter(void); 14. void save(void); 15. void load(void); 16. 17. struct catalog 18. { 19. char name[80]; 20. char AccNo[6]; 21. char address[80]; 22. unsigned date; 23. unsigned char month; 24. 25. }*cat[MAX]; 26. 27. struct bank 28. { 29. char BankName[20]; 30. unsigned LastAccNum; 31. unsigned sortCode; 32. 33. }*bank[MAX]; 34. 35. int top = 0; 36. 37. 38. int main(void) 39. { 40. int choice; 41. 42. load(); 43. 44. do 45. { 46. choice = menu(); 47. 48. switch(choice) 49. { 50. case 1: enter(); 51. break; 52. 53. case 2: customer_search(); 54. break; 55. 56. case 3: AccNo_search(); 57. break; 58. 59. case 4: save(); 60. } 61. } 62. 63. while(choice !=5); 64. system("PAUSE"); 65. return 0; 66. 67. } 68. 69. 70. /* Return a menu selection*/ 71. 72. int menu(void) 73. { 74. int i; 75. char str[80]; 76. 77. printf("\t\n\aEircom Billing System\n\n"); 78. printf("1->Add Customer\n"); 79. printf("2->Search by Name\n"); 80. printf("3->Search by Account Number\n"); 81. printf("4->Save added Customers\n"); 82. printf("5->Quit\n"); 83. 84. do 85. { 86. printf("Make your selection: "); 87. gets(str); 88. i = atoi(str); 89. printf("\n"); 90. } while(i < 1 || i > 5); 91. 92. return i; 93. } 94. 95. /*Enter customer into file */ 96. 97. 98. void enter(void) 99. { 100. int i; 101. char temp[80]; 102. 103. 104. for (i = top; i<MAX ; i++) 105. { 106. 107. cat[i] = malloc(sizeof(struct catalog)); 108. 109. if(!cat[i]) 110. { 111. printf("Out Of Memory\n"); 112. return; 113. } 114. 115. printf("Enter customer name (ENTER to Quit):"); 116. gets(cat[i] -> name); 117. 118. if(!*cat[i] -> name) 119. break; 120. 121. printf("\nEnter AccNo: "); 122. gets(cat[i] -> AccNo); 123. 124. printf("\nEnter address: "); 125. gets(cat[i] -> address); 126. 127. printf("\nEnter year: "); 128. gets(temp); 129. cat[i] -> date = (unsigned) atoi(temp); 130. 131. printf("\nEnter month: "); 132. gets(temp); 133. cat[i] -> month = (unsigned) atoi(temp); 134. 135. 136. 137. } 138. 139. top =i ; 140. 141. } 142. 143. /* Search for customer */ 144. 145. void customer_search(void) 146. { 147. char name[80]; 148. int i , found; 149. 150. printf("Name: "); 151. gets(name); 152. 153. found = 0; 154. 155. for (i=0; i<top; i++) 156. { 157. if (!strcmp(name,cat[i]->name)) 158. { 159. display(i); 160. found = 1; 161. printf("\n"); 162. } 163. } 164. 165. if(!found) 166. printf("Not Found\n"); 167. 168. } 169. 170. 171. 172. void AccNo_search(void) 173. { 174. char AccNo[80]; 175. int i , found; 176. 177. printf("AccNo: "); 178. gets(AccNo); 179. 180. found = 0; 181. 182. for (i=0; i<top; i++) 183. { 184. if (!strcmp(AccNo,cat[i] -> AccNo)) 185. { 186. display(i); 187. found = 1; 188. printf("\n"); 189. } 190. } 191. 192. if(!found) 193. printf("Not Found\n"); 194. } 195. 196. 197. 198. /*Display entries*/ 199. 200. int display(int i) 201. { 202. system("CLS"); 203. printf("%s\n",cat[i]->AccNo); 204. printf("Account Holder Name: %s\n",cat[i]->name); 205. printf("address: %s\n",cat[i]->address); 206. printf("Year and Month: %u %u ",cat[i]->date,cat[i]->month); 207. } 208. 209. /*load file*/ 210. 211. void load(void) 212. { 213. FILE *fp,*fp2; 214. int i; 215. 216. if((fp =fopen("index.bin","rb"))==NULL )//|| fp2 =fopen("bank.bin","rb"))==NULL) 217. { 218. printf("File does not exist on disk"); 219. return; 220. } 221. 222. 223. if(fread(&top,sizeof top,1,fp) !=1) 224. { 225. printf("Error Reading count"); 226. exit(1); 227. } 228. 229. for (i=0 ; i < top ; i++) 230. { 231. cat[i] = malloc(sizeof(struct catalog)); 232. 233. if (!cat[i]) 234. { 235. printf("Out of Memory->\n"); 236. top = i-1; 237. break; 238. } 239. 240. if(fread(cat[i], sizeof(struct catalog),1,fp) !=1) 241. { 242. printf("Error reading catalog data->\n"); 243. exit(1); 244. } 245. } 246. 247. 248. 249. for (i=0 ; i < top ; i++) 250. { 251. bank[i] = malloc(sizeof(struct bank)); 252. 253. if (!bank[i]) 254. { 255. printf("Out of Memory->\n"); 256. top = i-1; 257. break; 258. } 259. 260. if(fread(bank[i], sizeof(struct bank),1,fp) !=1) 261. { 262. printf("Error reading catalog data->\n"); 263. exit(1); 264. } 265. } 266. fclose(fp2); 267. fclose(fp); 268. } 269. 270. 271. /* Save the catalog file */ 272. 273. void save(void) 274. { 275. FILE *fp; 276. int i; 277. 278. if((fp =fopen("index.bin","w+"))==NULL) 279. { 280. printf("Cant open file->\n"); 281. exit(1); 282. } 283. if(fwrite(&top,sizeof top,1,fp) !=1) 284. { 285. printf("Error Writting count.\n"); 286. exit(1); 287. } 288. 289. for(i=0 ; i < top ; i++) 290. { 291. if(fwrite(cat[i], sizeof(struct catalog), 1, fp) != 1) 292. printf("Error writing count.\n"); 293. exit(1); } fclose(fp); }
