1: /* matrix00add.c */
 2: #include<stdio.h>
 3: 
 4: int main( void ){
 5: 
 6:   /* 変数の宣言 */
 7:   int n, m;
 8: 
 9:   n = 2;
10:   m = 3;
11: 
12:   /* 配列変数の宣言 */
13:   float a[ n ][ m ], b[ n ][ m ], c[ n ][ m ];
14: 
15:   /* カウンタ用変数の宣言 */
16:   int i, j;
17: 
18:   /* 配列の初期化 */
19:   a[ 0 ][ 0 ] = 2.3; a[ 0 ][ 1 ] = 0.2; a[ 0 ][ 2 ] = 0.1;
20:   a[ 1 ][ 0 ] = -0.3; a[ 1 ][ 1 ] = 0.0; a[ 1 ][ 2 ] = -0.5;
21: 
22:   b[ 0 ][ 0 ] = -1.0; b[ 0 ][ 1 ] = -0.1; b[ 0 ][ 2 ] = 1.8;
23:   b[ 1 ][ 0 ] = 0; b[ 1 ][ 1 ] = 2.2; b[ 1 ][ 2 ] = 2.5;
24: 
25:   /* 行列の和を計算 */
26:   for ( i = 0; i < n; i = i + 1 ) {
27:     for ( j = 0; j < m; j = j + 1 ) {
28: 
29:       c[ i ][ j ] = a[ i ][ j ] + b[ i ][ j ];
30: 
31:     }
32:   }
33: 
34:   /* 行列 a の表示 */
35:   printf( " a =\n" );
36:   for ( i = 0; i < n; i = i + 1 ) {
37:     printf( " [" );
38:     for( j = 0; j < m; j = j + 1 ) {
39: 
40:       printf( " %5.2f ", a[ i ][ j ] );
41: 
42:     }
43:     printf( "]\n" );
44:   }
45:   printf( "\n" );
46: 
47:   /* 行列 b の表示 */
48:   printf( " b =\n" );
49:   for ( i = 0; i < n; i = i + 1 ) {
50:     printf( " [" );
51:     for( j = 0; j < m; j = j + 1 ) {
52:       
53:       printf( " %5.2f ", b[ i ][ j ] );
54:       
55:     }
56:     printf( "]\n" );
57:   }
58:   printf( "\n" );
59:   
60:   /* 行列 c の表示 */
61:   printf( " c = a + b\n" );
62:   for ( i = 0; i < n; i = i + 1 ) {
63:     printf( " [" );
64:     for( j = 0; j < m; j = j + 1 ) {
65: 
66:       printf( " %5.2f ", c[ i ][ j ] );
67: 
68:     }
69:     printf( "]\n" );
70:   }
71:   printf( "\n" );
72:   
73: }