9511_workbook

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commit a43f98ada5fad87e4a98052681d0fc8616461915
parent f5649e35337702c283fa276c6c03316870f76c98
Author: klewer-martin <martin.cachari@gmail.com>
Date:   Thu,  1 Apr 2021 19:40:21 -0300

Update: added matrix_struct.c which does the same as ex4*.c but implements a structure for the matrix;

Diffstat:
A
guia03/matrix_struct.c
 | 
100
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 100 insertions(+), 0 deletions(-)
diff --git a/guia03/matrix_struct.c b/guia03/matrix_struct.c
@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <time.h>
+
+#define N 3
+#define M 3
+
+typedef struct {
+    size_t rows, columns;
+    double array[N][M];
+} matrix_t;
+
+/*
+bool m_isSimetric(size_t r, size_t c, double matrix[r][c]);
+*/
+
+void m_load(matrix_t *matrix);
+void m_initrand(matrix_t *matrix);
+void m_print(matrix_t *matrix);
+void m_transpose(matrix_t *matrix, matrix_t *matrix_transpose);
+
+int main (void)
+{
+    matrix_t matrix;
+    matrix.rows = N;
+    matrix.columns = M;
+
+    m_initrand(&matrix);
+    m_print(&matrix);
+
+    //m_load(N, M, matrix);
+    //m_print(N, M, matrix);
+    //putchar('\n');
+    
+    //m_transpose(N, M, matrix, matrix_transpose);
+    //m_print(M, N, matrix_transpose);
+
+
+    return 0;
+}
+/*
+void m_print(size_t r, size_t c, double matrix[r][c])
+{
+    for(size_t i = 0; i < r; i++) {
+        putchar('(');
+        putchar(' ');
+        for(size_t j = 0; j < c; j++) {
+            printf("%6.2f ", matrix[i][j]);
+        }
+        putchar(')');
+        putchar('\n');
+    }
+}
+
+*/
+
+void m_print(matrix_t *matrix)
+{
+    for(size_t i = 0; i < matrix->rows; i++) {
+        putchar('(');
+        putchar(' ');
+        for(size_t j = 0; j < matrix->columns; j++) {
+            printf("%6.2f ", matrix->array[i][j]);
+        }
+        putchar(')');
+        putchar('\n');
+    }
+}
+
+void m_initrand(matrix_t *matrix)
+{
+    srand((unsigned int)time(NULL));
+
+    for(size_t i = 0; i < matrix->rows; i++) {
+        for(size_t j = 0; j < matrix->columns; j++) {
+            matrix->array[i][j] = ((double)rand()/(double)(RAND_MAX)) * 20;
+        }
+    }
+}
+
+void m_load(matrix_t *matrix)
+{
+    char buf[20];
+    for(size_t i = 0; i < matrix->rows; i++) {
+        for(size_t j = 0; j < matrix->columns; j++) {
+            fgets(buf, 20, stdin);
+            matrix->array[i][j] = strtod(buf, NULL);
+        }
+    }
+}
+
+void m_transpose(size_t r, size_t c, double matrix[r][c], double matrix_t[c][r])
+{
+    for(size_t i = 0; i < r; i++) {
+        for(size_t j = 0; j < c; j++)
+            matrix_t[j][i] = matrix[i][j];
+
+    }
+}