수다닷컴

과제인데요...

file1.txt에서 몇 행 몇 열 인지 입력 받고 행렬 인자(?)를 입력 받아서 계산하고 file2.txt에 저장(?)하는 것인데요..

아무 내용없이 그냥 파일만 생성되네요..

참고로 리눅스에서 실행해야 하는거에요..

#include stdlib.h
#include pthread.h
#include stdio.h

typedef struct data {
int i; //A.row
int j; //A.col
int row; //B.row
int col; //B.col
} data_t;

FILE * fp1;
FILE * fp2;
double **A;
double **B;
double **result;

void *myrun(void *param);

int main(int argc, char *argv[]) {
int i, j, row, col;

fp1 = fopen(file1.txt, rt);
fp2 = fopen(file2.txt, wt);
fscanf(fp1, %d %d, &i, &j);
fscanf(fp1, %d %d, &row, &col);

for(i = 0; i atoi(argv[1]); i++) {

data_t *param = (data_t *)malloc(sizeof(data_t));
param-i = i;
param-j = j;
param-row = row;
param-col = col;

//Create Thread to calculate value of matrix at row column
pthread_t tid;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_create(&tid, &attr, myrun, param);
pthread_join(tid,NULL);
}

return 0;
}

void *myrun(void * param) {
int k, m, p;
int i, j, row, col;

//Create structure and assign data from param to it.
data_t threadVal;
threadVal = *(data_t*)param;

//Perform the thread job here
printf(My param value = %d %d\n, threadVal.i, threadVal.j);
printf(My param value = %d %d\n, threadVal.row, threadVal.col);

A = (double**)malloc(sizeof(double*)*threadVal.i);
for(k=0; kthreadVal.i; k++)
{
A[k] = (double *)malloc(sizeof(double)*threadVal.j);

for(m=0; mthreadVal.j; m++)
{
fscanf(fp1, %lf, &A[k][m]);
}
}

B = (double**)malloc(sizeof(double*)*threadVal.row);

for(k=0; kthreadVal.row; k++)
{
B[k] = (double *)malloc(sizeof(double)*(threadVal.col));
for(m=0; mthreadVal.col; m++)
{
fscanf(fp1, %lf, &B[k][m]);
}
}

result = (double**)malloc(sizeof(double*)*threadVal.i);
for(k=0; kthreadVal.i; k++)
{
result[k] = (double *)malloc(sizeof(double)*(threadVal.col));
for(m=0; mthreadVal.col; m++)
{
result[k][m] = 0;
for(p=0; pthreadVal.j; p++)
{
result[k][m] += A[k][p] * B[p][m];
}
}
}

for(k=0; kthreadVal.i; k++)
{
for(m=0; mthreadVal.col; m++)
{
fprintf(fp2, %lf, result[k][m]);
}
}

fclose(fp1);
fclose(fp2);
}

신청하기