The GOTO Keyword

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/TPSC-ASSISTANT-TECHNICAL-OFFICER/programming-in-c/control-flow/switch-jump-stmts/asset-the-goto-keyword after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Paper 2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  3. Paper 2 | Computer Organization And Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Control Unit Design, Instr Formats & Modes, Programming the Basic Computer
  4. Paper 2 | Analog And Digital Communication: Introduction to Communication Systems & Random Signals, Analog Communication Systems, Information Theory & Digital Communication Fundamentals, Digital Modulation & Detection Techniques, Error Control, Synchronization & Multiple Access Techniques
  5. Paper 2 | Programming in C: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  6. Paper 2 | Data Structures And Programming: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
  7. Paper 2 | Algorithms: Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  8. Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  9. Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS
  10. Paper 2 | Databases: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  11. Paper 2 | Information Systems and Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Paper 2 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics
  13. Paper 2 | Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, HTML Basics, JavaScript-Basics, CSS, XML, HTML5
  14. Paper 2 | Cyber Security And Emerging Technologies: Emerging Tech Trends, Internet of Things
  15. Paper 2 | Cloud Technology: Cloud Computing
  16. Paper 2 | Probability and statistics: Probability, Statistics
  17. Paper-1 English: Vocabulary, Preposition, Articles, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Cloze Test (Cloze Passage), Sentence Construction
  18. Paper 1 General Mental Ability & Logical reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Partnership, Arithmetic, Speed Mathematics and Basic Mathematics, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Venn Diagram, Analogy
  19. Paper-1 General Knowledge & Current Affairs: State Wise GK, History, Geography, GK- Current Affairs, Static General Knowledge
  20. Full Length Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video, presented by Sanchit Jain Sir from Knowledge Gate, discusses the C programming language's 'goto' keyword. The lecture begins by strongly advising against using 'goto', citing that it makes programs unreliable, unreadable, and hard to debug, and that there is seldom a legitimate reason for its use. The instructor argues that structured control flow constructs like 'if', 'for', 'while', and 'switch' are more elegant and logical. To illustrate the concept, the video presents two code examples. The first example uses 'goto' to jump to a label 'sos' based on a condition, demonstrating how it can be used to exit a program. The second, more complex example shows a nested loop structure where a 'goto' statement is used to exit all loops at once when a specific condition is met, with a label 'out' placed after the loops. The video uses on-screen text and code snippets to support the explanation.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide displaying 'Break' and '2 - The goto Keyword'. The instructor, Sanchit Jain Sir, begins by explaining that the 'goto' keyword should be avoided as it makes a C programmer's life miserable. He states that there is seldom a legitimate reason for using 'goto' and that its use is a primary reason programs become unreliable, unreadable, and hard to debug. He acknowledges that some programmers find 'goto' seductive because it seems easy to use for control flow, but he emphasizes that structured programming constructs like 'if', 'for', 'while', and 'switch' are far more logical and easier to understand. The on-screen text reinforces these points, highlighting the negative consequences of 'goto'. The instructor's tone is cautionary, aiming to dissuade the use of 'goto' in favor of structured programming.

  2. 2:00 – 2:41 02:00-02:41

    The video transitions to a code example to demonstrate the 'goto' keyword. The first code snippet shows a 'main()' function that prompts the user to enter the number of goals scored against India. It uses an 'if' statement to check if the number of goals is less than or equal to 5. If true, it executes a 'goto sos' statement, which jumps to the label 'sos'. The label 'sos' is defined at the end of the function, and the code at that point prints a message about soccer players learning C and then exits the program. The second example shows a more complex scenario with three nested 'for' loops. The loops iterate over variables i, j, and k. Inside the innermost loop, a condition checks if i, j, and k are all equal to 3. If true, a 'goto out' statement is executed, which immediately transfers control to the label 'out', bypassing the rest of the loops. The label 'out' is placed after the loops, and the code at that point prints 'Out of the loop at last!'. The instructor explains that 'goto' can be used to break out of multiple nested loops, which is a common use case for this keyword.

The video provides a comprehensive lesson on the 'goto' keyword in C programming. It begins with a strong pedagogical stance against its use, arguing that it leads to poor code quality and is a hallmark of unstructured programming. The instructor contrasts this with the benefits of structured control flow. To balance this theoretical argument, the video presents two practical code examples. The first demonstrates a simple use of 'goto' to exit a program, while the second illustrates its utility in breaking out of deeply nested loops, a scenario where 'goto' can be a practical solution. The synthesis is that while 'goto' is generally discouraged, it is not entirely obsolete and can be used in specific, well-justified situations, though the primary takeaway is to prefer structured programming constructs.

Loading lesson…