TechCodeview

Matrice se naširoko koriste u raznim područjima kao što su fizika, inženjerstvo i računalna znanost. U programskom jeziku C, matrice se koriste za predstavljanje i manipuliranje višedimenzionalnim nizovima podataka. Evo nekoliko primjera zašto trebamo koristiti matrice u C-u:

Obrada slike:Matrice se obično koriste za predstavljanje slika u aplikacijama za računalni vid i obradu slika. Svaki element matrice predstavlja intenzitet piksela na slici, a matrica se može koristiti za primjenu različitih algoritama za obradu slike kao što su filtriranje, transformacija i kompresija.Linearna algebra: Matrice se koriste za predstavljanje i rukovanje linearnim jednadžbama, koje se široko koriste u fizici, inženjerstvu i računalnoj grafici. Matrice se mogu koristiti za rješavanje sustava linearnih jednadžbi, izračunavanje determinanti i izvođenje matričnih operacija kao što su inverzija, transpozicija i množenje.Strojno učenje:Matrice se koriste za predstavljanje podataka u algoritmima strojnog učenja. Matrice se mogu koristiti za predstavljanje vektora značajki, skupova za treniranje i težinskih matrica u neuronskim mrežama.Razvoj igre: Matrice se koriste za predstavljanje i manipuliranje 3D grafikom u razvoju igara. Matrice se mogu koristiti za predstavljanje transformacija kao što su translacija, rotacija i skaliranje objekata u 3D sceni.Robotika i sustavi upravljanja: Matrice se koriste za predstavljanje i manipuliranje stanjem sustava u robotici i sustavima upravljanja, matrice se mogu koristiti za predstavljanje položaja, brzine i ubrzanja zglobova robota ili za predstavljanje stanja upravljačkog sustava.

Stvaranje matrice u programskom jeziku C

1. Korištenje polja

C kod

 #include int main() { int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; printf('Matrix created using an array:
&apos;); for (int i = 0; i <3; i++) { for (int j="0;" < 3; j++) printf('%d ', matrix[i][j]); } printf('
'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using an array: 1 2 3 4 5 6 7 8 9 </pre> <p> <strong>2. Using a Nested Loop</strong> </p> <p> <strong>C Code</strong> </p> <pre> #include int main() { int matrix[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) matrix[i][j]="i" + j; } printf('matrix created using a nested loop:
'); (i="0;" i printf('%d ', matrix[i][j]); printf('
'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using a nested for loop: 0 1 2 1 2 3 2 3 4 </pre> <p> <strong>3. Dynamic Memory Allocation</strong> </p> <p> <strong>C Code</strong> </p> <pre> #include #include int main() { int **matrix; matrix = (int **)malloc(3 * sizeof(int *)); for (int i = 0; i <3; i++) matrix[i]="(int" *)malloc(3 * sizeof(int)); printf('matrix created using dynamic memory allocation:
'); for (int i="0;" < 3; { j="0;" j++) printf('%d ', matrix[i][j]); } printf('
'); free(matrix[i]); free(matrix); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using dynamic memory allocation: 0 0 0 0 0 0 0 0 0 </pre> <p>Please note that when using dynamic memory allocation, it&apos;s important to free the memory after use by using free() function, this is to avoid memory leaks.</p> <h3>How to Add Matrix in C</h3> <p>To add two matrices in C programming language, you can use a nested for loop to iterate through each element of the matrices and add the corresponding elements together.</p> <p>Here is an example of adding two matrices of size 3x3:</p> <p> <strong>C Code</strong> </p> <pre> #include int main() { int a[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; int b[3][3] = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}}; int c[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) c[i][j]="a[i][j]" + b[i][j]; } printf('result of addition: 
'); (i="0;" i printf('%d ', c[i][j]); printf('
'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Result of addition: 10 10 10 10 10 10 10 10 10 </pre> <p> <strong>Explanation:</strong> </p> <p>The first for loop is used to iterate through the rows of the matrices, while the second for loop is used to iterate through the columns. Inside the nested for loop, the corresponding elements of the two matrices &apos;a&apos; and &apos;b&apos; are added together and stored in the corresponding element of the matrix &apos;c&apos;.</p> <hr></3;></pre></3;></pre></3;></pre></3;>

2. Korištenje ugniježđene petlje

C kod

 #include int main() { int matrix[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) matrix[i][j]="i" + j; } printf(\'matrix created using a nested loop:
\'); (i="0;" i printf(\'%d \', matrix[i][j]); printf(\'
\'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using a nested for loop: 0 1 2 1 2 3 2 3 4 </pre> <p> <strong>3. Dynamic Memory Allocation</strong> </p> <p> <strong>C Code</strong> </p> <pre> #include #include int main() { int **matrix; matrix = (int **)malloc(3 * sizeof(int *)); for (int i = 0; i <3; i++) matrix[i]="(int" *)malloc(3 * sizeof(int)); printf(\'matrix created using dynamic memory allocation:
\'); for (int i="0;" < 3; { j="0;" j++) printf(\'%d \', matrix[i][j]); } printf(\'
\'); free(matrix[i]); free(matrix); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using dynamic memory allocation: 0 0 0 0 0 0 0 0 0 </pre> <p>Please note that when using dynamic memory allocation, it&apos;s important to free the memory after use by using free() function, this is to avoid memory leaks.</p> <h3>How to Add Matrix in C</h3> <p>To add two matrices in C programming language, you can use a nested for loop to iterate through each element of the matrices and add the corresponding elements together.</p> <p>Here is an example of adding two matrices of size 3x3:</p> <p> <strong>C Code</strong> </p> <pre> #include int main() { int a[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; int b[3][3] = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}}; int c[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) c[i][j]="a[i][j]" + b[i][j]; } printf(\'result of addition: 
\'); (i="0;" i printf(\'%d \', c[i][j]); printf(\'
\'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Result of addition: 10 10 10 10 10 10 10 10 10 </pre> <p> <strong>Explanation:</strong> </p> <p>The first for loop is used to iterate through the rows of the matrices, while the second for loop is used to iterate through the columns. Inside the nested for loop, the corresponding elements of the two matrices &apos;a&apos; and &apos;b&apos; are added together and stored in the corresponding element of the matrix &apos;c&apos;.</p> <hr></3;></pre></3;></pre></3;>

3. Dinamička dodjela memorije

C kod

 #include #include int main() { int **matrix; matrix = (int **)malloc(3 * sizeof(int *)); for (int i = 0; i <3; i++) matrix[i]="(int" *)malloc(3 * sizeof(int)); printf(\'matrix created using dynamic memory allocation:
\'); for (int i="0;" < 3; { j="0;" j++) printf(\'%d \', matrix[i][j]); } printf(\'
\'); free(matrix[i]); free(matrix); return 0; pre> <p> <strong>Output</strong> </p> <pre> Matrix created using dynamic memory allocation: 0 0 0 0 0 0 0 0 0 </pre> <p>Please note that when using dynamic memory allocation, it&apos;s important to free the memory after use by using free() function, this is to avoid memory leaks.</p> <h3>How to Add Matrix in C</h3> <p>To add two matrices in C programming language, you can use a nested for loop to iterate through each element of the matrices and add the corresponding elements together.</p> <p>Here is an example of adding two matrices of size 3x3:</p> <p> <strong>C Code</strong> </p> <pre> #include int main() { int a[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; int b[3][3] = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}}; int c[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) c[i][j]="a[i][j]" + b[i][j]; } printf(\'result of addition: 
\'); (i="0;" i printf(\'%d \', c[i][j]); printf(\'
\'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Result of addition: 10 10 10 10 10 10 10 10 10 </pre> <p> <strong>Explanation:</strong> </p> <p>The first for loop is used to iterate through the rows of the matrices, while the second for loop is used to iterate through the columns. Inside the nested for loop, the corresponding elements of the two matrices &apos;a&apos; and &apos;b&apos; are added together and stored in the corresponding element of the matrix &apos;c&apos;.</p> <hr></3;></pre></3;>

Napominjemo da je pri korištenju dinamičke dodjele memorije važno osloboditi memoriju nakon upotrebe pomoću funkcije free(), kako bi se izbjeglo curenje memorije.

Kako dodati matricu u C

Da biste dodali dvije matrice u programskom jeziku C, možete koristiti ugniježđenu for petlju za ponavljanje kroz svaki element matrice i dodavanje odgovarajućih elemenata zajedno.

Evo primjera zbrajanja dvije matrice veličine 3x3:

C kod

 #include int main() { int a[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; int b[3][3] = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}}; int c[3][3]; int i, j; for (i = 0; i <3; i++) { for (j="0;" j < 3; j++) c[i][j]="a[i][j]" + b[i][j]; } printf(\\'result of addition: 
\\'); (i="0;" i printf(\\'%d \\', c[i][j]); printf(\\'
\\'); return 0; pre> <p> <strong>Output</strong> </p> <pre> Result of addition: 10 10 10 10 10 10 10 10 10 </pre> <p> <strong>Explanation:</strong> </p> <p>The first for loop is used to iterate through the rows of the matrices, while the second for loop is used to iterate through the columns. Inside the nested for loop, the corresponding elements of the two matrices &apos;a&apos; and &apos;b&apos; are added together and stored in the corresponding element of the matrix &apos;c&apos;.</p> <hr></3;>

Obrazloženje:

Prva for petlja se koristi za iteraciju kroz retke matrica, dok se druga for petlja koristi za iteraciju kroz stupce. Unutar ugniježđene for petlje, odgovarajući elementi dviju matrica 'a' i 'b' se zbrajaju i pohranjuju u odgovarajući element matrice 'c'.