1: /* matrix00add_func11.c */
 2: /* このプログラムは、動きません */
 3: #include <stdio.h>
 4: 
 5: /* 関数 print_mat のプロトタイプ宣言 */
 6: void print_mat( int row, int col, float x[ row ][ col ] );
 7: 
 8: /* 関数 add_mat のプロトタイプ宣言 */
 9: void add_mat( int, int, float *, float *, float * );
10: 
11: 
12: int main( void ){
13: 
14:   /* 変数の宣言 */
15:   int row, col;
16:   int rowa, cola;
17:   int rowb, colb;
18:   int rowc, colc;
19: 
20:   row = 2, col = 3;
21:   rowa = row, cola = col;
22:   rowb = row; colb = col;
23:   rowc = row; colc = col;
24: 
25:   /* 配列変数の宣言 */
26:   float a[ rowa ][ cola ];
27:   float b[ rowb ][ colb ];
28:   float c[ rowc ][ colc ];
29: 
30:   /* 配列の初期化 */
31:   a[ 0 ][ 0 ] = 2.3; a[ 0 ][ 1 ] = 0.2; a[ 0 ][ 2 ] = 0.1;
32:   a[ 1 ][ 0 ] = -0.3; a[ 1 ][ 1 ] = 0.0; a[ 1 ][ 2 ] = -0.5;
33: 
34:   b[ 0 ][ 0 ] = -1.0; b[ 0 ][ 1 ] = -0.1; b[ 0 ][ 2 ] = 1.8;
35:   b[ 1 ][ 0 ] = 0; b[ 1 ][ 1 ] = 2.2; b[ 1 ][ 2 ] = 2.5;
36: 
37:   /* 行列の和 c = a + b を計算 */
38:   add_mat( row, col, a, b, c );
39: 
40:   /* 行列 a の表示 */
41:   printf( " a =\n" );
42:   print_mat( rowa, cola, a );
43:   printf( "\n" );
44: 
45:   /* 行列 b の表示 */
46:   printf( " b =\n" );
47:   print_mat( rowb, colb, b );
48:   printf( "\n" );
49: 
50:   /* 行列 c = a + b の表示 */
51:   printf( " c = a + b\n" );
52:   print_mat( rowc, colc, c );
53:   printf( "\n" );
54: 
55:   return 0;
56: 
57: }
58: 
59: 
60: /* 関数 print_mat */
61: void print_mat( int row, int col, float x[ row ][ col ] ){
62: 
63:   /* カウンタ用変数の宣言 */
64:   int i, j;
65: 
66:   /* 行列の表示 */
67:   for ( i = 0; i < row; i = i + 1 ) {
68:     printf( " [" );
69:     for( j = 0; j < col; j = j + 1 ) {
70: 
71:       printf( " %5.2f ", x[ i ][ j ] );
72: 
73:     }
74:     printf( "]\n" );
75:   }
76: 
77: }
78: 
79: /* 関数 add_mat */
80: void add_mat( int row, int col, float *x, float *y, float *z ){
81: 
82:   /* カウンタ用変数の宣言 */
83:   int i, j;
84: 
85:   /* 行列の和を計算 */
86:   for ( i = 0; i < row; i = i + 1 ) {
87:     for ( j = 0; j < col; j = j + 1 ) {
88: 
89:       z[ i ][ j ] = x[ i ][ j ] + y[ i ][ j ];
90: 
91:     }
92:   }
93: 
94: }