1 #include <stdio.h>
2 #include <stdlib.h>
3
4 struct Matrix{
5 int row;
6 int col;
7 int *mat;
8 };
9 /*初始化一个r行c列的矩阵*/
10 struct Matrix matrix_initialize( int r, int c )
11 {
12 struct Matrix m;
13 m.row = r;
14 m.col = c;
15 (m.mat) = (int *) malloc( sizeof(int)*(m.row)*(m.col));
16 return m;
17 }
18
19 /*打印矩阵到标准输出*/
20 void matrix_show( struct Matrix m )
21 {
22 int i,j;
23 for( i = 0; i<m.row; i++)
24 {
25 for(j = 0; j<m.col; j++)
26 {
27 printf("%d ",*(m.mat+i*(m.col)+j) );
28 }
29 printf("\n");
30 }
31 }
32
33 /*从文件加载矩阵，文件第一行为矩阵的行值和列值，以后为数据（int型）*/
34 struct Matrix* load( char *file_name, struct Matrix * pm )
35 {
36 FILE *fp;
37 if( !(fp = fopen( file_name, "r" ) ) )
38 exit(-1);
39 //struct Matrix *pm;
40 printf("loading file %s...\n",file_name);
41 fscanf(fp,"%d%d",&(pm->row),&(pm->col));
42 pm->mat = (int *) malloc(sizeof(int)*(pm->row)*(pm->col));
43 int i,j;
44 for(i=0;i<pm->row;i++)
45 {
46 for(j = 0; j < pm->col; j++)
47 {
48 if( fscanf(fp,"%d",((pm->mat)+i*(pm->col)+j)) == EOF )
49 exit(-1);
50 }
51 }
52 fclose(fp);
53 return pm;
54 }
55
56
57 int main()
58 {
59 struct Matrix m;
60 struct Matrix *pm = &m;
61 pm = load("matrix.dat",pm);
62 matrix_show(*pm);
63 return 0;
64 }
