This is a C Program to implement tree data structure. It uses current working directory as the root and traverse all files inside the directory and prints them on the screen.
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You can use any C/C++ compilers to compile and run this program however, it is tested using Turbo C++ Compiler only.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | #include <stdio.h> #include <dos.h> #include <dir.h> #include <conio.h> #include <cstring.h> char directory_name[128]; // maximum lenght is 128 as far as i had seen in // win9x, but xp goes upto approx==231. dir length char * view[] = { "-----", "-", " -----", " ", " -----" }; void TREE_TRAVERSE(char * ); int counter, sw = 0; char current_working_directory[128]; void main() { clrscr(); getcwd(current_working_directory, 128); // preserve curr. dir.. chdir("\\"); //to root , this is important TREE_TRAVERSE("*.*"); // traverl... chdir(current_working_directory); // store to present working directory... } void TREE_TRAVERSE(char * pointer) { struct ffblk file; int flag, num = 0, i, j; static int deep_inside = 0; flag = findfirst(pointer, & file, FA_DIREC); // find directory and not filez... while (flag == 0) // loop until you are out { if ((file.ff_attrib & FA_DIREC) == FA_DIREC && file.ff_name[0] != '.') { deep_inside++; // go into directory... directory_name[0] = '\0'; if (deep_inside == 1) //if on root put "-" strcat(directory_name, view[0]); else { strcat(directory_name, view[1]); //else decorate i = 2; while (i < deep_inside) // put space upto... { strcat(directory_name, view[3]); //3 for space i++; // printf("%d", i); } if (i == 2) { strcat(directory_name, view[4]); } // if (i == 3) { strcat(directory_name, view[1]); strcat(directory_name, view[2]); } //up dated else { strcat(directory_name, view[2]); } } strcat(directory_name, file.ff_name); printf("%s", directory_name); // print dir name //if out of dir's then goto new line if (num != deep_inside) printf("\n"); // getch(); chdir(file.ff_name); file.ff_name[0] = '\0'; TREE_TRAVERSE(pointer); } //e-o-if flag = findnext( & file); } // e-o-while if (deep_inside--> 0) chdir(".."); } |
