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Code safest cryptocurrency exchange

From Mir Maruf Hossain, 2 Years ago, written in C.
URL https://pastebin.pl/view/ca57cb03
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  1. #include<graphics.h>
  2. #include<stdio.h>
  3. #include<conio.h>
  4. #include<string.h>
  5. typedef struct Employee
  6. {
  7. char empID[15];
  8. char fname[20];
  9. char lname[20];
  10. int age;
  11. float bsal;
  12. long phone;
  13. } Employee;
  14. FILE *fp;
  15. Employee emp;
  16. char fileName[]="EMP.txt";
  17. char tempFileName[]="temp.txt";
  18. /* function used in project */
  19. void AddEmployee();
  20. void ListEmployee();
  21. void SearchEmployee();
  22. void ModifyEmployee();
  23. void DeleteEmployee();
  24. void first();
  25. char file();
  26. void main()
  27. {
  28. char ch='a';
  29. int gd=DETECT,gm,x,y;
  30. initgraph(&gd,&gm,"c:\\turboc3\\bgi");
  31. clrscr();
  32. first();
  33. fp=fopen(fileName,"rb+");
  34. if(fp==NULL)
  35. {
  36. fp=fopen( fileName,"wb+");
  37. if(fp==NULL)
  38. {
  39. printf("Can't Open File");
  40. exit();
  41. }
  42. }
  43. while(ch!='6')
  44. {
  45. ch=file();
  46. switch(ch)
  47. {
  48. case '1':
  49. AddEmployee();
  50. break;
  51. case '2':
  52. ListEmployee();
  53. break;
  54. case '3':
  55. SearchEmployee();
  56. break;
  57. case '4':
  58. ModifyEmployee();
  59. break;
  60. case '5':
  61. DeleteEmployee();
  62. break;
  63. case '6':
  64. exit(0);
  65. break;
  66. default:
  67. //testcolor(RED+BLINK);
  68. gotoxy(30,10);
  69. cprintf("WRONG CHOICE!!!");
  71. break;
  72. }
  73. }
  74. }
  75. void AddEmployee()
  76. {
  77. char another,ch;
  78. do
  79. {
  80. clrscr();
  81. fseek(fp,0,SEEK_END);
  82. another='Y';
  83. gotoxy(25,3);
  84. //testcolor(RED);
  85. cprintf("ADD EMPLOYEE RECORD");
  86. gotoxy(25,6);
  87. //testcolor(GREEN);
  88. cprintf("1.ENTER EMPLOYEE ID: ");
  89. gets(emp.empID);
  90. gotoxy(25,7);
  91. cprintf("2.ENTER FIRST NAME OF EMPLOYEE: ");
  92. gets(emp.fname);
  93. gotoxy(25,8);
  94. cprintf("3. ENTER LAST NAME OF EMPLOYEE: ");
  95. gets(emp.lname);
  96. gotoxy(25,9);
  97. cprintf("4. ENTER AGE OF EMPLOYEE: ");
  98. scanf("%d",&emp.age);
  99. gotoxy(25,10);
  100. cprintf("5. ENTER SALARY OF EMPLOYEE: ");
  101. scanf("%f",&emp.bsal);
  102. gotoxy(25,11);
  103. cprintf("6.ENTER PHONE OF EMPLOYEE:");
  104. scanf("%ld",&emp.phone);
  105. gotoxy(28,15);
  106. textcolor(MAGENTA + BLINK);
  107. cprintf("SAVE CHANGE (y/n)?");
  108. ch=getch();
  109. if(ch=='y'||ch=='Y')
  110. {
  111. fwrite(&emp,sizeof(emp),1,fp);
  112. fflush(stdin);
  113. }
  114. gotoxy(28,15);
  115. cprintf("ADD ANOTHER EMPLOYEE(Y/N)?");
  116. fflush(stdin);
  117. another=getch();
  118. fflush(stdin);
  119. textcolor(WHITE);
  120. }while(another=='Y'|| another=='y');
  121. }
  122. void ListEmployee()
  123. {
  124. int i;
  125. fseek(fp,0,SEEK_SET);
  126. //testcolor(RED);
  127. gotoxy(1,1);
  128. cprintf("LIST OF EMPLOYEE RECORD");
  129. //testcolor(GREEN);
  130. gotoxy(1,2);
  131. cprintf("EMP ID");
  132. gotoxy(14,2);
  133. cprintf("FIRST NAME");
  134. gotoxy(27,2);
  135. cprintf("LAST NAME");
  136. gotoxy(40,2);
  137. cprintf("AGE");
  138. gotoxy(53,2);
  139. cprintf("SALARY");
  140. gotoxy(66,2);
  141. cprintf("PHONE");
  142. for(i=1;i<=80;i++)
  143. {
  144. //testcolor(YELLOW);
  145. gotoxy(i,3);
  146. cprintf("-");
  147. }
  148. i=4;
  149. while(fread(&emp,sizeof(emp),1,fp)==1)
  150. {
  151. gotoxy(1,i);
  152. cprintf("%s",emp.empID);
  153. gotoxy(14,i);
  154. cprintf("%s",emp.fname);
  155. gotoxy(27,i);
  156. cprintf("%s",emp.lname);
  157. gotoxy(40,i);
  158. cprintf("%d",emp.age);
  159. gotoxy(53,i);
  160. cprintf("%.2f",emp.bsal);
  161. gotoxy(66,i);
  162. cprintf("%ld",emp.phone);
  163. i++;
  164. }
  166. }
  167. void SearchEmployee()
  168. {
  169. int i,datafound=0;
  170. char employeeId[15];
  171. char another,ch;
  172. do
  173. {
  174. clrscr();
  175. fseek(fp,0,SEEK_SET);
  176. gotoxy(1,1);
  177. textcolor(RED);
  178. cprintf("SEARCH EMPLOYEE RECORD");
  179. gotoxy(5,2);
  180. textcolor(GREEN);
  181. cprintf("ENTER EMPLOYEE ID: ");
  182. gets(employeeId);
  183. while(fread(&emp,sizeof(emp),1,fp)==1)
  184. {
  185. if(strcmp(emp.empID,employeeId)==0)
  186. {
  187. datafound=1;
  188. break;
  189. }
  190. }
  191. if(datafound==1)
  192. {
  193. textcolor(RED);
  194. gotoxy(4,4);
  195. cprintf("RECORD OF EMPLOYEE");
  196. textcolor(GREEN);
  197. gotoxy(4,5);
  198. cprintf("——————–");
  199. gotoxy(4,6);
  200. cprintf("EMPLOYEE ID :");
  201. cprintf("%s",emp.empID);
  202. gotoxy(4,7);
  203. cprintf("FIRST NAME :");
  204. cprintf("%s",emp.fname);
  205. gotoxy(4,8);
  206. cprintf("LAST NAME :");
  207. gotoxy(4,9);
  208. cprintf("AGE :");
  209. cprintf("%d",emp.age);
  210. gotoxy(4,10);
  211. cprintf("BASIC SALARY :");
  212. cprintf("%.2f",emp.bsal);
  213. gotoxy(4,11);
  214. cprintf("PHONE :");
  215. cprintf("%ld",emp.phone);
  216. }
  217. else
  218. {
  219. gotoxy(10,8);
  220. cprintf("EMPLOYEE NOT FOUND!!!!!");
  221. }
  222. gotoxy(25,15);
  223. textcolor(RED+BLINK);
  224. cprintf("SEARCH ANOTHER EMPLOYEE(Y/N)?");
  225. fflush(stdin);
  226. another=getch();
  227. fflush(stdin);
  228. textcolor(WHITE);
  229. }while(another=='Y'|| another=='y');
  230. }
  231. void ModifyEmployee()
  232. {
  233. int i, datafound=0,recordNo=0;
  234. char employeeId[15];
  235. char another,ch;
  236. do
  237. {
  238. clrscr();
  239. fseek(fp,0,SEEK_SET);
  240. rewind(fp);
  241. gotoxy(1,1);
  242. textcolor(RED);
  243. cprintf("MODIFY EMPLOYEE RECORD");
  244. textcolor(GREEN);
  245. gotoxy(2,2);
  246. cprintf("ENTER EMPLOYEE ID TO BE MODIFIED:");
  247. gets(employeeId);
  248. while(fread(&emp,sizeof(emp),1,fp)==1)
  249. {
  250. if(strcmp(emp.empID,employeeId)==0)
  251. {
  252. datafound=1;
  253. break;
  254. }
  255. recordNo++;
  256. }
  257. if(datafound==1)
  258. {
  259. gotoxy(5,3);
  260. textcolor(RED);
  261. cprintf("OLD RECORD IS:");
  262. gotoxy(5,4);
  263. textcolor(GREEN);
  264. cprintf("EMPLOYEE ID :");
  265. cprintf("%s",emp.empID);
  266. gotoxy(5,5);
  267. cprintf("FIRST NAME :");
  268. cprintf("%s",emp.fname);
  269. gotoxy(5,6);
  270. cprintf("LAST NAME :");
  271. cprintf("%s",emp.lname);
  272. gotoxy(5,7);
  273. cprintf("AGE :");
  274. cprintf("%d",emp.age);
  275. gotoxy(5,8);
  276. cprintf("BASIC SALARY :");
  277. cprintf("%.2f",emp.bsal);
  278. gotoxy(5,9);
  279. cprintf("PHONE :");
  280. cprintf("%ld",emp.phone);
  281. gotoxy(5,11);
  282. textcolor(GREEN);
  283. cprintf("EMPLOYEE ID:");
  284. gets(emp.empID);
  285. gotoxy(5,13);
  286. cprintf("FIRST NAME :");
  287. gets(emp.fname);
  288. gotoxy(5,14);
  289. cprintf("LAST NAME :");
  290. gets(emp.lname);
  291. gotoxy(5,15);
  292. cprintf("AGE :");
  293. scanf("%d",&emp.age);
  294. gotoxy(5,16);
  295. cprintf("BASIC SALARY :");
  296. scanf("%f",&emp.bsal);
  297. gotoxy(5,17);
  298. cprintf("PHONE :");
  299. scanf("%ld",&emp.phone);
  300. fseek(fp,sizeof(emp)*(recordNo),SEEK_SET);
  301. gotoxy(10,19);
  302.  
  303. if(fwrite(&emp,sizeof(emp),1,fp)==1)
  304. cprintf("THE RECORD HAS BEEN MODIFIED!!!!!");
  305. else
  306. cprintf("EROR DURING MODIFICATION!!!!!");
  307. }
  308. else
  309. {
  310. gotoxy(10,19);
  311. cprintf("EMPLOYEE NOT FOUND!!!!!");
  312. }
  313. gotoxy(10,21);
  314. textcolor(RED+BLINK);
  315. cprintf("MODIFY ANOTHER EMPLOYEE(Y/N)?");
  316. fflush(stdin);
  317. another=getch();
  318. fflush(stdin);
  319. textcolor(WHITE);
  320. }while(another=='Y'||another=='y');
  321. }
  322. void DeleteEmployee()
  323. {
  324. int i,datafound=0;
  325. char employeeId[15];
  326. FILE *fpTemp;
  327. char another,ch;
  328. do
  329. {
  330. clrscr();
  331. fseek(fp,0,SEEK_SET);
  332. rewind(fp);
  333. textcolor(RED);
  334. gotoxy(1,1);
  335. cprintf("DELETE EMPLOYEE RECORD");
  336. textcolor(GREEN);
  337. gotoxy(2,2);
  338. cprintf("ENTER EMPLOYEE ID TO BE DELETED:");
  339. gets(employeeId);
  340. while(fread(&emp,sizeof(emp),1,fp)==1)
  341. {
  342. if(strcmp(emp.empID,employeeId)==0)
  343. {
  344. datafound=1;
  345. break;
  346. }
  347. }
  348. if(datafound==1)
  349. {
  350. fpTemp=fopen(tempFileName,"wb");
  351. rewind(fp);
  352. while(fread(&emp,sizeof(emp),1,fp)==1)
  353. {
  354. if(strcmp(emp.empID,employeeId)!=0)
  355. fwrite(&emp,sizeof(emp),1,fpTemp);
  356. }
  357. fclose(fp);
  358. fclose(fpTemp);
  359. remove(fileName);
  360. rename(tempFileName,fileName);
  361. fp=fopen(fileName,"rb+");
  362. gotoxy(6,8);
  363. cprintf("SUCCESSFULLY DELETED!!!!!");
  364. }
  365. else
  366. {
  367. gotoxy(2,6);
  368. cprintf("EMPLOYEE NOT FOUND!!!!!");
  369. }
  370. gotoxy(10,20);
  371. textcolor(RED+BLINK);
  372. cprintf("DELETE ANOTHER EMPLOYEE(Y/N)?");
  373. fflush(stdin);
  374. another=getch();
  375. fflush(stdin);
  376. textcolor(WHITE);
  377. }while(another=='Y'|| another=='y');
  378. }
  379. void first()
  380. {
  381. int gd=DETECT,gm;
  382. initgraph(&gd,&gm,"c:\\tc\\bgi");
  383. setcolor(GREEN);
  384. settextstyle(4,0,3);
  385. outtextxy(100,190,"EMPLOYEE INFORMATION SYSTEM");
  386. //settextcolor(1,0,1);
  387. setcolor(RED);
  388. outtextxy(480,350,"DEVELOPED BY:");
  389. setcolor(BLUE);
  390. outtextxy(480,370,"BESTENGINEERINGPROJECTS");
  391. outtextxy(480,400,">>>>>>>>>>");
  393. restorecrtmode();
  394. }
  395. char file()
  396. {
  397. int gdriver=DETECT, gmod;
  398. char i;
  399. initgraph(&gdriver,&gmod,"c:\\tc\\bgi");
  400. setcolor(RED);
  401. setcolor(GREEN);
  402. settextstyle(7,0,2);
  403. outtextxy(130,45,"EMPLOYEE INFORMATION SYSTEM");
  404. settextstyle(7,0,3);
  405. setcolor(YELLOW);
  406. outtextxy(260,95,"MAIN MENU");
  407. settextstyle(0,0,0);
  408. setcolor(MAGENTA);
  409. outtextxy(200,145,"1>>ADD EMPLOYEE RECORD.");
  410. outtextxy(200,170,"2>>LIST RECORDS OF ALL EMPLOYEE.");
  411. outtextxy(200,195,"3>>SEARCH A PARTICULR EMPLOYEE.");
  412. outtextxy(200,220,"4>>MODIFY INFORMATION OF A EMPLOYEE.");
  413. outtextxy(200,245,"5>>DELETE A EMPLOYEE.");
  414. outtextxy(200,270,"6>>EXIT STSTEM.");
  415. setcolor(GREEN+BLINK);
  416. outtextxy(200,360,"ENTER YOUR CHOICE: ");
  417. i=getch();
  418. restorecrtmode();
  419. return (i);
  420. }
  421.  

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