{"id":26387326,"url":"https://github.com/fasilofficial/21-pattern-programs-in-c","last_synced_at":"2025-03-17T08:31:24.633Z","repository":{"id":182485257,"uuid":"668566246","full_name":"fasilofficial/21-pattern-programs-in-C","owner":"fasilofficial","description":"This repository contains a collection of 21 pattern programs written in the C programming language.","archived":false,"fork":false,"pushed_at":"2023-07-21T05:49:33.000Z","size":7,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2023-07-21T06:39:20.670Z","etag":null,"topics":["c","cprogramming","pattern-printing","patterns"],"latest_commit_sha":null,"homepage":"","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/fasilofficial.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2023-07-20T05:43:23.000Z","updated_at":"2023-07-21T06:39:22.534Z","dependencies_parsed_at":"2023-07-21T06:49:23.296Z","dependency_job_id":null,"html_url":"https://github.com/fasilofficial/21-pattern-programs-in-C","commit_stats":null,"previous_names":["fasilofficial/13-pattern-programs-in-c","fasilofficial/21-pattern-programs-in-c"],"tags_count":null,"template":null,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fasilofficial%2F21-pattern-programs-in-C","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fasilofficial%2F21-pattern-programs-in-C/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fasilofficial%2F21-pattern-programs-in-C/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fasilofficial%2F21-pattern-programs-in-C/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/fasilofficial","download_url":"https://codeload.github.com/fasilofficial/21-pattern-programs-in-C/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243999889,"owners_count":20381448,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["c","cprogramming","pattern-printing","patterns"],"created_at":"2025-03-17T08:31:22.694Z","updated_at":"2025-03-17T08:31:24.175Z","avatar_url":"https://github.com/fasilofficial.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# 21-pattern-programs-in-C\n  This repository contains a collection of 21 pattern programs written in the C programming language. These pattern programs are designed to help programmers strengthen their understanding of loops and conditional statements while creating visually appealing patterns. Whether you are a beginner looking to learn C programming or an experienced programmer exploring pattern-based algorithms, this repository provides a hands-on learning experience with C and pattern-based programming.\n\u003c/br\u003e\u003c/br\u003eThese C pattern programs can be utilized as a reference or a starting point for your own pattern-based projects. Feel free to fork, modify, and use the code in any way that suits your needs. Happy coding!\n\n1. Sqaure\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n* * * * * \n* * * * *\n* * * * * \n* * * * *\n* * * * *\n```\n\n2. Increasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n* \n* *\n* * *\n* * * *\n* * * * *\n```\n\n3. Decreasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n* * * * * \n* * * *\n* * *\n* *\n*\n```\n\n4. Right Sided Increasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          * \n        * *\n      * * *\n    * * * *\n  * * * * * \n```\n\n5. Right Sided Decreasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n* * * * * \n  * * * *\n    * * *\n      * *\n        *\n```\n\n6. Hill Pattern (Pyramid)\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          *   \n        * * * \n      * * * * *   \n    * * * * * * * \n  * * * * * * * * * \n```\n\n7. Reverse Hill Pattern (Reverse Pyramid)\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n* * * * * * * * * \n  * * * * * * *   \n    * * * * * \n      * * *   \n        *     \n```\n\n8. Double Hill Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          *                 * \n        * * *             * * *\n      * * * * *         * * * * *\n    * * * * * * *     * * * * * * *\n  * * * * * * * * * * * * * * * * * *\n```\n\n9. Diamond Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 1; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          *     \n        * * *   \n      * * * * * \n    * * * * * * *   \n  * * * * * * * * * \n    * * * * * * * \n      * * * * *   \n        * * *     \n          *   \n```\n\n10. Left Pascal's Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 0; i \u003c n - 1; i++)\n    {\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n*         \n* *       \n* * *     \n* * * *   \n* * * * * \n* * * *   \n* * *     \n* *       \n*        \n```\n\n11. Right Pascal's Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 1; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          * \n        * * \n      * * * \n    * * * * \n  * * * * * \n    * * * * \n      * * * \n        * * \n          * \n```\n\n12. Butterfly Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n - 1; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 1; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n*                 * \n* *             * * \n* * *         * * * \n* * * *     * * * * \n* * * * * * * * * * \n* * * *     * * * * \n* * *         * * * \n* *             * * \n*                 * \n```\n\n13. Sand Glass Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 0; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        for (int j = 0; j \u003c= i; j++)\n        {\n            printf(\"* \");\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n  * * * * * * * * * * \n    * * * * * * * * \n      * * * * * *   \n        * * * *     \n          * *   \n          * *   \n        * * * * \n      * * * * * * \n    * * * * * * * * \n  * * * * * * * * * *\n```\n\n14. Parallel Bar Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (j == 1 || j == n)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"   \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n*          * \n*          * \n*          * \n*          * \n*          * \n```\n\n15. Hollow Square Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (i == 1 || i == n || j == 1 || j == n)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n* * * * * \n*       * \n*       * \n*       * \n* * * * * \n```\n\n16. Plus Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (i == n / 2 + 1 || j == n / 2 + 1)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n    *     \n    *     \n* * * * * \n    *     \n    *     \n```\n\n17. Cross Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (i == j || i + j == n + 1)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n*       * \n  *   *   \n    *     \n  *   *   \n*       * \n```\n\n18. Hollow Increasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (j == 1 || i == n || i == j)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n*\n* *       \n*   *     \n*     *   \n* * * * * \n```\n\n19. Hollow Decreasing Triangle\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= n; j++)\n        {\n            if (i == 1 || j == 1 || i + j == n + 1)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n* * * * * \n*     *   \n*   *     \n* *       \n*\n```\n\n20. Hollow Hill Pattern (Hollow Pyramid)\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = i; j \u003c n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 1; j \u003c i; j++)\n        {\n            if (j == 1 || i == 5)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        for (int j = 1; j \u003c= i; j++)\n        {\n            if (j == i || i == n)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n```\n```\n        *         \n      *   *       \n    *       *     \n  *           *   \n* * * * * * * * * \n```\n\n21. Hollow Diamond Pattern\n```\n#include \u003cstdio.h\u003e\nvoid main()\n{\n    int n = 5;\n    for (int i = 1; i \u003c n; i++)\n    {\n        for (int j = i; j \u003c= n; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = 1; j \u003c i; j++)\n        {\n            if (j == 1)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        for (int j = 1; j \u003c= i; j++)\n        {\n            if (j == i)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n    for (int i = 1; i \u003c= n; i++)\n    {\n        for (int j = 1; j \u003c= i; j++)\n        {\n            printf(\"  \");\n        }\n        for (int j = i; j \u003c n; j++)\n        {\n            if (j == i)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        for (int j = i; j \u003c= n; j++)\n        {\n            if (j == n)\n            {\n                printf(\"* \");\n            }\n            else\n            {\n                printf(\"  \");\n            }\n        }\n        printf(\"\\n\");\n    }\n}\n\n```\n```\n          *         \n        *   *       \n      *       *     \n    *           *   \n  *               * \n    *           * \n      *       *   \n        *   *\n          *\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffasilofficial%2F21-pattern-programs-in-c","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ffasilofficial%2F21-pattern-programs-in-c","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffasilofficial%2F21-pattern-programs-in-c/lists"}