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Arrays, Vectors, and Strings in C: A Complete Guide with Examples

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This document offers a comprehensive guide to arrays, vectors, and strings in C programming, covering their declaration, initialization, and manipulation. It explains how to work with one-dimensional and multidimensional arrays, implement vector-like functionality using dynamic memory allocation, a...

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Geupload op 21 januari 2025
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Type Overig
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arrays in c
vectors in c
strings in c
dynamic arrays in c
string functions in c
malloc and realloc in c
data structures in c
c programming
practical examples in c
second year computer science

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C Programming Exam Study Guide and Q&A (21 documents)

$ 110.99 $ 57.49 21 items

1. Overig - Getting started with c programming
2. Overig - C setup: how to install and run c programs
3. Overig - C syntax and program structure with examples
4. Overig - C programming: variables, data types, and their uses
5. Overig - Operators in c: a complete guide to arithmetic, relational, and logical operators and...
6. Overig - Control structures in c: if-else, switch, and loops explained with examples
7. Overig - C programming: mastering functions, parameters, and return types
8. Overig - Strings in c: declaration, initialization, and examples
9. Overig - Vectors in c programming – dynamic arrays & implementation with examples
10. Overig - Arrays, vectors, and strings in c: a complete guide with examples
11. Overig - Pointers in c: memory management, function pointers & dynamic allocation with example...
12. Overig - Structures and unions in c: a complete guide with examples
13. Overig - C memory management: dynamic allocation & pointers explained
14. Overig - Preprocessor directives in c: macros, includes, and conditional compilation
15. Overig - Error handling in c: techniques for managing errors with examples
16. Overig - Advanced c topics: pointers, memory management, and more
17. Overig - Best practices in c programming: writing clean, efficient code
18. Overig - The complete guide to c programming: from basics to advanced
19. Overig - Study questions and answers in c programming: prepare for exams
20. Overig - Advantages and disadvantages of c programming
21. Overig - 100 c programming questions and answers for exam and interviews
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Arrays, Vectors and Strings in C
In C, arrays, vectors, and strings are used to store multiple values. Understanding
how to use them is crucial for managing large amounts of data and handling
dynamic memory.

1. Arrays in C
An array is a collection of variables of the same type that are stored in contiguous
memory locations. It allows you to store multiple values in a single variable.

1.1. Declaring and Initializing Arrays

To declare an array in C, specify the data type, the array name, and the size of the
array. For example:

#include <stdio.h>

int main() {
int numbers[5]; // Declaring an array of 5 integers

// Initializing an array
numbers[0] = 10;
numbers[1] = 20;
numbers[2] = 30;
numbers[3] = 40;
numbers[4] = 50;

// Accessing array elements
for (int i = 0; i < 5; i++) {
printf("Element %d: %d\n", i, numbers[i]);
}

return 0;
}

, 1.2. Array Initialization

You can initialize an array at the time of declaration:

#include <stdio.h>

int main() {
int numbers[] = {10, 20, 30, 40, 50}; // Size is automatically determined

// Accessing array elements
for (int i = 0; i < 5; i++) {
printf("Element %d: %d\n", i, numbers[i]);
}

return 0;
}

1.3. Multi-Dimensional Arrays

C supports multidimensional arrays, where each element is itself an array. A
common use case is a matrix.

#include <stdio.h>

int main() {
int matrix[2][3] = {{1, 2, 3}, {4, 5, 6}}; // 2x3 matrix

// Accessing elements of a 2D array
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 3; j++) {
printf("Element at [%d][%d]: %d\n", i, j, matrix[i][j]);
}
}

return 0;
}

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