C in 100 Seconds
Learn C programming one concept at a time. Each episode covers one topic in about 100 seconds — fast, focused, no filler.
52 episodes
1
C in 100 Seconds: Your First C Program | Episode 1
C in 100 Seconds: Your First C Program | Episode 1
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2
C in 100 Seconds: Variables — int float char double | Episode 2
C in 100 Seconds: Variables — int float char double | Episode 2
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3
C in 100 Seconds: Same Data Different Output — Format Specifiers | Episode 3
C in 100 Seconds: Same Data Different Output — Format Specifiers | Episode 3
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4
C in 100 Seconds: Arithmetic Operators | Episode 4
C in 100 Seconds: Arithmetic Operators | Episode 4
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5
C in 100 Seconds: If Else — Grade Calculator in 14 Lines | Episode 5
C in 100 Seconds: If Else — Grade Calculator in 14 Lines | Episode 5
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6
C in 100 Seconds: Switch — case, break, default | Episode 6
C in 100 Seconds: Switch — case, break, default | Episode 6
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7
C in 100 Seconds: while vs do-while — Two Ways to Loop | Episode 7
C in 100 Seconds: while vs do-while — Two Ways to Loop | Episode 7
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8
C in 100 Seconds: For Loops — Init Condition Step | Episode 8
C in 100 Seconds: For Loops — Init Condition Step | Episode 8
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9
C in 100 Seconds: Functions — Define Once Call Anywhere | Episode 9
C in 100 Seconds: Functions — Define Once Call Anywhere | Episode 9
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10
C in 100 Seconds: Store Five Numbers in One Variable — Arrays | Episode 10
C in 100 Seconds: Store Five Numbers in One Variable — Arrays | Episode 10
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11
C in 100 Seconds: strlen strcpy strcmp — Strings in C | Episode 11
C in 100 Seconds: strlen strcpy strcmp — Strings in C | Episode 11
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12
C in 100 Seconds: scanf — Read Numbers and Strings from the User | Episode 12
C in 100 Seconds: scanf — Read Numbers and Strings from the User | Episode 12
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13
C in 100 Seconds: Safe Input with fgets | Episode 13
C in 100 Seconds: Safe Input with fgets | Episode 13
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14
C in 100 Seconds: #define const enum — When to Use Each | Episode 14
C in 100 Seconds: #define const enum — When to Use Each | Episode 14
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15
C in 100 Seconds: Type Casting — Why 7/2 Is 3 and How to Fix It | Episode 15
C in 100 Seconds: Type Casting — Why 7/2 Is 3 and How to Fix It | Episode 15
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16
C in 100 Seconds: Three Files One Program — Header Files | Episode 16
C in 100 Seconds: Three Files One Program — Header Files | Episode 16
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17
C in 100 Seconds: Pointers — Two Ways to Access the Same Memory | Episode 17
C in 100 Seconds: Pointers — Two Ways to Access the Same Memory | Episode 17
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18
C in 100 Seconds: Walk an Array With a Pointer — Pointer Arithmetic | Episode 18
C in 100 Seconds: Walk an Array With a Pointer — Pointer Arithmetic | Episode 18
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19
C in 100 Seconds: Pass by Reference — Pointers as Parameters | Episode 19
C in 100 Seconds: Pass by Reference — Pointers as Parameters | Episode 19
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20
C in 100 Seconds: Dynamic Memory — malloc sizeof free | Episode 20
C in 100 Seconds: Dynamic Memory — malloc sizeof free | Episode 20
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21
C in 100 Seconds: calloc realloc — Zero Init and Resize | Episode 21
C in 100 Seconds: calloc realloc — Zero Init and Resize | Episode 21
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22
C in 100 Seconds: Memory Leaks — malloc Without free | Episode 22
C in 100 Seconds: Memory Leaks — malloc Without free | Episode 22
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23
C in 100 Seconds: Structs | Episode 23
C in 100 Seconds: Structs | Episode 23
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23
C in 100 Seconds: Structs | Episode 23
C in 100 Seconds: Structs | Episode 23
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24
C in 100 Seconds: Structs and Pointers — The Arrow Operator | Episode 24
C in 100 Seconds: Structs and Pointers — The Arrow Operator | Episode 24
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25
C in 100 Seconds: Unions — Shared Memory One Field at a Time | Episode 25
C in 100 Seconds: Unions — Shared Memory One Field at a Time | Episode 25
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26
C in 100 Seconds: Typedef — Custom Type Names | Episode 26
C in 100 Seconds: Typedef — Custom Type Names | Episode 26
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27
C in 100 Seconds: Function Pointers — Callbacks and Dispatch | Episode 27
C in 100 Seconds: Function Pointers — Callbacks and Dispatch | Episode 27
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28
C in 100 Seconds: Arrays of Pointers — String Lists and Pointer Tables | Episode 28
C in 100 Seconds: Arrays of Pointers — String Lists and Pointer Tables | Episode 28
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29
C in 100 Seconds: Double Pointers — Pointer to Pointer | Episode 29
C in 100 Seconds: Double Pointers — Pointer to Pointer | Episode 29
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30
C in 100 Seconds: Void Pointers — Generic Pointers in C | Episode 30
C in 100 Seconds: Void Pointers — Generic Pointers in C | Episode 30
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31
C in 100 Seconds: Stack vs Heap — Where Variables Live | Episode 31
C in 100 Seconds: Stack vs Heap — Where Variables Live | Episode 31
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32
C in 100 Seconds: String Functions — strcat, strchr, strstr | Episode 32
C in 100 Seconds: String Functions — strcat, strchr, strstr | Episode 32
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33
C in 100 Seconds: String Tokenizing — strtok | Episode 33
C in 100 Seconds: String Tokenizing — strtok | Episode 33
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34
C in 100 Seconds: sprintf and snprintf — Format Into Strings | Episode 34
C in 100 Seconds: sprintf and snprintf — Format Into Strings | Episode 34
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35
C in 100 Seconds: File I/O Reading — fopen, fgets, fgetc | Episode 35
C in 100 Seconds: File I/O Reading — fopen, fgets, fgetc | Episode 35
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36
C in 100 Seconds: File I/O Writing — fprintf, fputs, Append | Episode 36
C in 100 Seconds: File I/O Writing — fprintf, fputs, Append | Episode 36
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37
C in 100 Seconds: Binary File I/O — fread and fwrite | Episode 37
C in 100 Seconds: Binary File I/O — fread and fwrite | Episode 37
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38
C in 100 Seconds: Command Line Arguments — argc and argv | Episode 38
C in 100 Seconds: Command Line Arguments — argc and argv | Episode 38
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39
C in 100 Seconds: Error Handling — errno, perror, strerror | Episode 39
C in 100 Seconds: Error Handling — errno, perror, strerror | Episode 39
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40
C in 100 Seconds: Preprocessor Directives — define, ifdef, ifndef | Episode 40
C in 100 Seconds: Preprocessor Directives — define, ifdef, ifndef | Episode 40
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41
C in 100 Seconds: Multi-File Projects — Headers, Linking, Make | Episode 41
C in 100 Seconds: Multi-File Projects — Headers, Linking, Make | Episode 41
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42
C in 100 Seconds: Linked List — Create, Traverse, Free | Episode 42
C in 100 Seconds: Linked List — Create, Traverse, Free | Episode 42
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43
C in 100 Seconds: Linked List — Insert and Delete | Episode 43
C in 100 Seconds: Linked List — Insert and Delete | Episode 43
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44
C in 100 Seconds: Linked List — Traverse, Count, Search | Episode 44
C in 100 Seconds: Linked List — Traverse, Count, Search | Episode 44
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45
C in 100 Seconds: Doubly Linked List — prev and next | Episode 45
C in 100 Seconds: Doubly Linked List — prev and next | Episode 45
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46
C in 100 Seconds: Stack — Push, Pop, Peek | Episode 46
C in 100 Seconds: Stack — Push, Pop, Peek | Episode 46
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47
C in 100 Seconds: Queue — Enqueue, Dequeue, Circular Array | Episode 47
C in 100 Seconds: Queue — Enqueue, Dequeue, Circular Array | Episode 47
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48
C in 100 Seconds: Hash Table — Hash Function, Buckets, Collisions | Episode 48
C in 100 Seconds: Hash Table — Hash Function, Buckets, Collisions | Episode 48
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49
C in 100 Seconds: Hash Table — Chaining, Insert, Lookup, Delete | Episode 49
C in 100 Seconds: Hash Table — Chaining, Insert, Lookup, Delete | Episode 49
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50
C in 100 Seconds: Binary Tree — Create, Insert, Traverse | Episode 50
C in 100 Seconds: Binary Tree — Create, Insert, Traverse | Episode 50
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51
C in 100 Seconds: Binary Tree Traversal — Inorder, Preorder, Postorder | Episode 51
C in 100 Seconds: Binary Tree Traversal — Inorder, Preorder, Postorder | Episode 51
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