1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <stdbool.h> 4 #include <time.h> 5 6 #define N 3 7 #define M 4 8 9 void m_load(size_t r, size_t c, double matrix[r][c]); 10 void m_initrand(size_t r, size_t c, double matrix[r][c]); 11 void m_print(size_t r, size_t c, double matrix[r][c]); 12 void m_transpose(size_t r, size_t c, double matrix[r][c], double matrix_t[c][r]); 13 14 int main (void) 15 { 16 double matrix[N][M]; 17 double matrix_transpose[M][N]; 18 19 // m_initrand(N, M, matrix); 20 m_load(N, M, matrix); 21 m_print(N, M, matrix); 22 putchar('\n'); 23 24 m_transpose(N, M, matrix, matrix_transpose); 25 m_print(M, N, matrix_transpose); 26 27 28 return 0; 29 } 30 31 void m_load(size_t r, size_t c, double matrix[r][c]) 32 { 33 char buf[20]; 34 for(size_t i = 0; i < r; i++) { 35 for(size_t j = 0; j < c; j++) { 36 fgets(buf, 20, stdin); 37 matrix[i][j] = strtod(buf, NULL); /* value from stdin */ 38 } 39 } 40 } 41 42 void m_initrand(size_t r, size_t c, double matrix[r][c]) 43 { 44 srand((unsigned int)time(NULL)); 45 46 for(size_t i = 0; i < N; i++) { 47 for(size_t j = 0; j < M; j++) { 48 matrix[i][j] = ((double)rand()/(double)(RAND_MAX)) * 20; 49 } 50 } 51 } 52 53 void m_print(size_t r, size_t c, double matrix[r][c]) 54 { 55 for(size_t i = 0; i < r; i++) { 56 putchar('('); 57 putchar(' '); 58 for(size_t j = 0; j < c; j++) { 59 printf("%6.2f ", matrix[i][j]); 60 } 61 putchar(')'); 62 putchar('\n'); 63 } 64 } 65 66 void m_transpose(size_t r, size_t c, double matrix[r][c], double matrix_t[c][r]) 67 { 68 for(size_t i = 0; i < r; i++) { 69 for(size_t j = 0; j < c; j++) 70 matrix_t[j][i] = matrix[i][j]; 71 72 } 73 }
