{"id":146078,"date":"2025-07-23T11:54:39","date_gmt":"2025-07-23T06:24:39","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=146078"},"modified":"2025-07-23T11:54:39","modified_gmt":"2025-07-23T06:24:39","slug":"family-tree-builder-in-dsa-cpp","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/family-tree-builder-in-dsa-cpp\/","title":{"rendered":"DSA C++ Project – Family Tree Builder"},"content":{"rendered":"

Program 1<\/h3>\n
\/\/ Project: Family Tree Builder (Based on BT and Linked list)\r\n\r\n\/*\r\nObjective:\r\nTo create a basic system that allows users to build, manage, and \r\nexplore a family tree structure, where each person can have parent-child \r\nrelationships.\r\nTree Data Structure: Each node represents a person. Nodes can have a parent and \r\nmultiple children.\r\nDynamic Memory Allocation: For creating new family members at runtime.\r\nRecursion: For displaying the tree or searching through it.\r\n\r\nKey Features:\r\n1. Add a New Family Member(person)\r\n2. Set Parents \r\n2. Display the Entire Family Tree\r\n3.Search for a Member\r\n4.Show Ancestors\r\n5. Exit\r\n*\/\r\n\r\n\r\n#include <iostream>\r\n#include <cstring>\r\n#include <windows.h>\r\nusing namespace std;\r\n\r\nclass Person             \/\/ Node\r\n{\r\npublic:\r\n    char name[50];\r\n    Person* father;\r\n    Person* mother;\r\n    Person* next;\r\n\r\n    Person(const char* pname)\r\n     {\r\n        strcpy(name, pname);\r\n        father = nullptr;\r\n        mother = nullptr;\r\n        next = nullptr;\r\n    }\r\n};\r\n\r\nclass FamilyTree \r\n{\r\nprivate:\r\n    Person* head;\r\n\r\n    Person* findPerson(const char* name)    \/\/ mamta\r\n    {\r\n        Person* temp = head;\r\n        while (temp != nullptr) \r\n        {\r\n            if (strcmp(temp->name, name) == 0)\r\n                return temp;\r\n            temp = temp->next;\r\n        }\r\n        return nullptr;\r\n    }\r\n\r\n    void printAncestors(Person* person, int level = 1) \r\n    {\r\n        if (person == nullptr)\r\n            return;\r\n        if (person->father != nullptr) \r\n        {\r\n            for (int i = 0; i < level; i++) cout << \"  \";\r\n            cout << \"Father: \" << person->father->name << endl;\r\n            printAncestors(person->father, level + 1);\r\n        }\r\n        if (person->mother != nullptr) {\r\n            for (int i = 0; i < level; i++) cout << \"  \";\r\n            cout << \"Mother: \" << person->mother->name << endl;\r\n            printAncestors(person->mother, level + 1);\r\n        }\r\n    }\r\n\r\npublic:\r\n    FamilyTree() \r\n    {\r\n        head = nullptr;\r\n    }\r\n\r\n    void addPerson() \r\n    {\r\n        char name[50];\r\n        cout << \"Enter person's name: \";\r\n        cin.getline(name, 50);\r\n\r\n        if (findPerson(name) != nullptr)  \r\n        {\r\n            cout << \"Person already exists.\\n\";\r\n            return;\r\n        }\r\n\r\n        Person* newPerson = new Person(name);\r\n\r\n        if (head == nullptr)\r\n            head = newPerson;\r\n        else \r\n        {\r\n            Person* temp = head;\r\n            while (temp->next != nullptr)\r\n                temp = temp->next;\r\n            temp->next = newPerson;\r\n        }\r\n\r\n        cout << \"Person added.\\n\";\r\n    }\r\n\r\n    void setParents() \r\n    {\r\n        char childName[50], fatherName[50], motherName[50];\r\n\r\n        cout << \"Enter child's name: \";\r\n        cin.getline(childName, 50);\r\n\r\n        Person* child = findPerson(childName); \r\n        if (child == nullptr) \r\n        {\r\n            cout << \"Child not found. Add person first.\\n\";\r\n            return;\r\n        }\r\n\r\n        cout << \"Enter father's name: \";\r\n        cin.getline(fatherName, 50);\r\n        Person* father = findPerson(fatherName);\r\n        if (father == nullptr) {\r\n            cout << \"Father not found. Add person first.\\n\";\r\n            return;\r\n        }\r\n\r\n        cout << \"Enter mother's name: \";\r\n        cin.getline(motherName, 50);\r\n        Person* mother = findPerson(motherName);\r\n        if (mother == nullptr) {\r\n            cout << \"Mother not found. Add person first.\\n\";\r\n            return;\r\n        }\r\n\r\n        child->father = father;\r\n        child->mother = mother;\r\n\r\n        cout << \"Parents set successfully.\\n\";\r\n    }\r\n\r\n    void displayTree()\r\n     {\r\n        if (head == nullptr) \r\n        {\r\n            cout << \"No family members found.\\n\";\r\n            return;\r\n        }\r\n\r\n        Person* temp = head;\r\n        while (temp != nullptr) \r\n        {\r\n            cout << \"\\nName: \" << temp->name << endl;\r\n            if (temp->father != nullptr)\r\n                cout << \"    Father: \" << temp->father->name << endl;\r\n            if (temp->mother != nullptr)\r\n                cout << \"    Mother: \" << temp->mother->name << endl;\r\n            temp = temp->next;\r\n        }\r\n    }\r\n\r\n    void searchPerson()  \r\n    {\r\n        char name[50];\r\n        cout << \"Enter name to search: \";\r\n        cin.getline(name, 50);   \/\/mamta\r\n\r\n        Person* found = findPerson(name);\r\n        if (found != nullptr)\r\n            cout << \" \" << name << \" is in the family tree.\\n\";\r\n        else\r\n            cout << \" \" << name << \" not found.\\n\";\r\n    }\r\n\r\n    void showAncestors()\r\n     {\r\n        char name[50];\r\n        cout << \"Enter name to show ancestors: \";   \/\/shubham\r\n        cin.getline(name, 50);\r\n\r\n        Person* person = findPerson(name);\r\n        if (person == nullptr)\r\n         {\r\n            cout << \" Person not found.\\n\";\r\n            return;\r\n        }\r\n\r\n        cout << \"\ud83e\uddec Ancestors of \" << person->name << \":\\n\";\r\n        printAncestors(person);\r\n    }\r\n};\r\n\r\n\/\/ Menu\r\nvoid menu() {\r\n    FamilyTree tree;\r\n    int choice;\r\n\r\n    do {\r\n        cout << \"\\n=====  Family Tree Builder =====\\n\";\r\n        cout << \"1. Add Person\\n\";\r\n        cout << \"2. Set Parents\\n\";\r\n        cout << \"3. Display Family Tree\\n\";\r\n        cout << \"4. Search Person\\n\";\r\n        cout << \"5. Show Ancestors\\n\";\r\n        cout << \"6. Exit\\n\";\r\n        cout<<\"=============================\\n\";\r\n        cout << \"Choose an option: \";\r\n        cin >> choice;\r\n        cin.ignore(); \/\/ flush newline\r\n\r\n        switch (choice) {\r\n            case 1:\r\n                tree.addPerson();\r\n                break;\r\n            case 2:\r\n                tree.setParents();\r\n                break;\r\n            case 3:\r\n                tree.displayTree();\r\n                break;\r\n            case 4:\r\n                tree.searchPerson();\r\n                break;\r\n            case 5:\r\n                tree.showAncestors();\r\n                break;\r\n            case 6:\r\n                cout << \" Exiting. Goodbye!\\n\";\r\n                break;\r\n            default:\r\n                cout << \" Invalid choice. Try again.\\n\";\r\n        }\r\n\r\n    } while (choice != 6);\r\n}\r\n\r\nint main() \r\n{\r\n   SetConsoleOutputCP(CP_UTF8);\r\n    menu();\r\n    return 0;\r\n}<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Program 1 \/\/ Project: Family Tree Builder (Based on BT and Linked list) \/* Objective: To create a basic system that allows users to build, manage, and explore a family tree structure, where each...<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31449],"tags":[32874,34952,32869,32870,34887,34816,34951,34870,34950],"class_list":["post-146078","post","type-post","status-publish","format-standard","hentry","category-dsa-cpp-tutorials","tag-dsa-c","tag-dsa-c-family-tree-builder-project","tag-dsa-c-practical","tag-dsa-c-program","tag-dsa-c-project","tag-family-tree-builder","tag-family-tree-builder-in-dsa-c","tag-family-tree-builder-project","tag-family-tree-builder-using-dsa-c"],"yoast_head":"\nDSA C++ Project - Family Tree Builder - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/family-tree-builder-in-dsa-cpp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DSA C++ Project - 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