我正在編碼一個矩陣,其條目是具有有理係數的多項式。任何幫助將不勝感激。
我有合理的數量和合理的多項式聲明:
rational_number.h合理多項式數組的編譯錯誤
struct long_rational{
long p;
long q;
};
typedef struct long_rational rational;
polynomial.h
#define MAX_DEGREE 200
struct rational_polynomial{
long degree;
rational coef[MAX_DEGREE]; //rational coefficients in increase power.
};
typedef struct rational_polynomial polynomial;
poly_mat.c的全部
#include "poly_mat.h"
#define NR_END 1
#define FREE_ARG char*
polynomial **poly_matrix(long nrl, long nrh, long ncl, long nch)
/* allocates a matrix with polynomial entries in the range m[nrl..nrh][ncl..nch] */
{
long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
polynomial **m;
/* allocate pointers to rows */
m=(polynomial **) malloc((size_t)((nrow+NR_END)*sizeof(polynomial*)));
if (!m) nrerror("allocation failure 1 in matrix()");
m += NR_END;
m -= nrl;
/* allocate rows and set pointers to them */
m[nrl]=(polynomial *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(polynomial)));
if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
m[nrl] += NR_END;
m[nrl] -= ncl;
for (i=nrl+1; i<=nrh; i++) m[i]=m[i-1]+ncol;
/* return pointer to array of pointers to rows */
return m;
}
void **free_poly_matrix(polynomial **m, long nrl, long nrh, long ncl, long nch)
/* free a polynomial matrix allocated by poly_matrix() */
{
free((FREE_ARG) (m[nrl]+ncl-NR_END));
free((FREE_ARG) (m+nrl-NR_END));
}
void init_random_poly_matrix(int **m, long nrl, long nrh, long ncl, long nch)
/* initialize a random polynomial matrix with coefficient <=100*/
{
long i,j;
long iseed = (long)time(NULL);
srand (iseed);
for (i=nrl; i<=nrh; i++)
{
for (j=ncl; j<=nch; j++)
{
m[i][j].degree=(rand()%MAX_DEGREE);
for (k=0;k<=MAX_DEGREE;k++)
{
m[i][j].coef[k].p = (rand()%100);
m[i][j].coef[k].q = (1+rand()%100);
}
}
}
}
這裏是神祕的錯誤消息:
gcc -Wall -c -o poly_mat.o poly_mat.c poly_mat.c: In function ‘init_random_poly_matrix’: poly_mat.c:6: error: expected declaration specifiers before ‘(’ token poly_mat.c:28: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token poly_mat.c:35: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token poly_mat.h:14: error: old-style parameter declarations in prototyped function definition poly_mat.c:51: error: expected ‘{’ at end of input make: *** [poly_mat.o] Error 1
poly_mat.h缺少分號填充。
#ifndef POLY_MAT_H
#define POLY_MAT_H
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "nrutil.h"
#include "rational_number.h"
#include "polynomial.h"
/* matrix with polynomial entries */
polynomial **poly_matrix(long nrl, long nrh, long ncl, long nch);
void init_random_poly_matrix(int **m, long nrl, long nrh, long ncl, long nch);
void **free_poly_matrix(polynomial **m, long nrl, long nrh, long ncl, long nch);
#endif
現在我不能使用點運算符訪問數組中的多項式成員。
新的錯誤消息:
gcc -Wall -c -o poly_mat.o poly_mat.c poly_mat.c: In function ‘init_random_poly_matrix’: poly_mat.c:43: error: request for member ‘degree’ in something not a structure or union poly_mat.c:46: error: request for member ‘coef’ in something not a structure or union poly_mat.c:47: error: request for member ‘coef’ in something not a structure or union make: *** [poly_mat.o] Error 1
編輯2:實測值的錯誤。將其聲明爲int **而不是多項式**。
什麼是poly_mat.h? – 2012-04-28 08:28:26
你確定'polynomial'在.cpp文件中是可見的嗎?而且它實際上是那個時候的typedef? – 2012-04-28 08:48:19
plz show us poly_mat.h – 2012-04-28 09:43:58