Data_Structure/作業/unit1/matrix multiplication/read_matrix.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void mul(int **a, int **b, int **c, int m, int k, int n) {
	int i , j , l ;
    for (i = 0; i < m; i++) {
        for (j = 0; j < n; j++) {
            c[i][j] = 0;
            for (l = 0; l < k; l++) {
                c[i][j] += a[i][l] * b[l][j];
            }
        }
    }
}

void read_matrix(FILE *file,int *m,int *k,int *n){
	char line[1000];
//	int *m = 0, *k1 = 0, *k2 = 0, *n = 0;
	int *k1 , *k2;
	int i, j, temp;
	char *token;
	
	while (fgets(line, sizeof(line), file)) {
        if (strlen(line) <= 1) {
        	break; 
		}
        j = 0;
        token = strtok(line, " \n");
        while (token != NULL) {
			j++;
            token = strtok(NULL, " \n");
        }
        if (*k1 == 0) *k1 = j;
        m++;
        
    }
    // Ū<><C5AA><EFBFBD>ĤG<C4A4>ӯx<D3AF>}
    while (fgets(line, sizeof(line), file)) {
        j = 0;
        token = strtok(line, " \n");
        while (token != NULL) {
			j++;
            token = strtok(NULL, " \n");
        }
        if (*n == 0) *n = j;
        k2++;
        *k2 = k2;
    }
    printf("OK");
//    if (*k1!=*k2) return 1;
//    if (*k1==*k2){	
}

int main() {
    FILE *file ;
    
    int *m , *k , *n ;
    int i, j, temp;
    char *token;

    if ((file = fopen("matrix_input.txt", "r")) == NULL){
        printf("<EFBFBD>L<EFBFBD>k<EFBFBD><EFBFBD><EFBFBD>}<7D><><EFBFBD><EFBFBD>\n");
        return 1;
    }

    // Ū<><C5AA><EFBFBD>Ĥ@<40>ӯx<D3AF>}
//    while (fgets(line, sizeof(line), file)) {
//        if (strlen(line) <= 1) {
//        	break; 
//		}
//        j = 0;
//        token = strtok(line, " \n");
//        while (token != NULL) {
//			j++;
//            token = strtok(NULL, " \n");
//        }
//        if (k1 == 0) k1 = j;
//		
//        m++;
//    }
//
//    // Ū<><C5AA><EFBFBD>ĤG<C4A4>ӯx<D3AF>}
//    while (fgets(line, sizeof(line), file)) {
//        j = 0;
//        token = strtok(line, " \n");
//        while (token != NULL) {
//			j++;
//            token = strtok(NULL, " \n");
//        }
//        if (n == 0)	n = j;
//        k2++;
//    }

	read_matrix(file,&m,&k,&n);
	
    printf("<EFBFBD>Ĥ@<40>ӯx<D3AF>}: %d <20><> %d <20>C\n", *m, *k);
	printf("<EFBFBD>ĤG<EFBFBD>ӯx<EFBFBD>}: %d <20><> %d <20>C\n", *k, *n);
	printf("m = %d, k1 = %d, k2 = %d, n = %d\n\n", *m, *k , *k , *n);
    
    
	//<2F>ھ<EFBFBD>m,k,n<>t<EFBFBD>m<EFBFBD>O<EFBFBD><4F><EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD> 
	int **arr_a = (int**)malloc(m * sizeof(int*));
	int **arr_b = (int**)malloc(k * sizeof(int*));
	int **arr_c = (int**)malloc(m * sizeof(int*));
	for(i=0;i<m;i++){
		arr_a[i] = (int*)malloc(k*sizeof(int));		
		arr_c[i] = (int*)malloc(n*sizeof(int));
	}
	for(i=0;i<k;i++){
		arr_b[i] = (int*)malloc(n*sizeof(int));
	}
	    
	    
//		for (i = 0; i < m; i++) {
//            for (j = 0; j < k1; j++) {
//                arr_a[i][j] = matrix1[i][j];
//            }
//        }
//
//        for (i = 0; i < k2; i++) {
//            for (j = 0; j < n; j++) {
//                arr_b[i][j] = matrix2[i][j];
//            }
//        }
	    
	    mul(arr_a,arr_b,arr_c,m,k,n);
	    
//	    printf("%d\n",arr_a[0][1]);
//	    printf("%d\n",arr_b[0][1]);
//	    printf("%d\n",arr_c[0][1]);
	    
	    for(i=0;i<m;i++){
	    	for(j=0;j<n;j++){
	    		printf("c[%d][%d]=%d\n",i,j,arr_c[i][j]);
			}
		}
	    
	    fclose(file);
		
		free (arr_a);
		free (arr_b);
		free (arr_c);
		for(i=0;i<m;i++){
			free (arr_a[i]);
			free (arr_c[i]);
		}
		for(i=0;i<k;i++){
			free (arr_b[i]);
		}
	

//    if(k1!=k2){
//    	printf("<22><><EFBFBD>~! <20>x<EFBFBD>}<7D>L<EFBFBD>k<EFBFBD>ۭ<EFBFBD>\n");
//    	fclose(file);
//    	return 1;
//	}
	
    return 0;
}