读取和打印矩阵C
我的任务是从文件中读取数字,形成一个矩阵。 每行的前两个整数是行和列,其余整数是矩阵中的数据读取和打印矩阵C,c,matrix,C,Matrix,我的任务是从文件中读取数字,形成一个矩阵。 每行的前两个整数是行和列,其余整数是矩阵中的数据 2 2 1 2 3 4 看起来像 1 2 3 4 我能够使用以下方法成功加载到一个矩阵中: void RdMatrix(FILE *file, int (*matrix)[MAXSIZE][MAXSIZE], int *row, int *column) { int data; int matRow = RdRowSize(file); int matCol = RdCol
2 2 1 2 3 4
看起来像
1 2
3 4
我能够使用以下方法成功加载到一个矩阵中:
void RdMatrix(FILE *file, int (*matrix)[MAXSIZE][MAXSIZE], int *row, int *column)
{
int data;
int matRow = RdRowSize(file);
int matCol = RdColumnSize(file);
*row = matRow;
*column = matCol;
int i, j;
for (i = 0; i < matRow; i++)
{
for (j = 0; j < matCol; j++)
{
fscanf(file, "%d", &data);
*matrix[i][j] = data;
}
}
然后打印出来
1 2
9 8
9 8
7 6
什么时候应该打印
1 2
3 4
9 8
7 6
我不允许使用任何库,也不会有帮助,因为我以后必须在汇编中重新编写它
编辑:包括代码
#include <stdio.h>
#define MAXSIZE 10
FILE *fpin;
int RdRowSize(FILE *file)
{
int row;
fscanf(file, "%d", &row);
return row;
}
int RdColumnSize(FILE *file)
{
int col;
fscanf(file, "%d", &col);
return col;
}
void RdMatrix(FILE *file, int (*matrix)[MAXSIZE][MAXSIZE], int *row, int *column)
{
int data;
int matRow = RdRowSize(file);
int matCol = RdColumnSize(file);
*row = matRow;
*column = matCol;
int i, j;
printf("\n=====================\nLoading Matrix\n=====================\n");
for (i = 0; i < matRow; i++)
{
for (j = 0; j < matCol; j++)
{
fscanf(file, "%d", &data);
*matrix[i][j] = data;
}
}
}
void PrMat(int(*matrix)[MAXSIZE][MAXSIZE], int row, int col)
{
int i, j;
printf("\n");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
printf("%d ", *matrix[i][j]);
}
printf("\n");
}
printf("\n");
}
int main(void)
{
int RsizeM, CsizeM; /*matrix row size and column size*/
int A[MAXSIZE][MAXSIZE], B[MAXSIZE][MAXSIZE]; /*the two matrices*/
int rowA=0, columnA=0, rowB=0, columnB=0; /* the row and column sizes of A and B */
/*open input file - file name is hardcoded*/
fpin = fopen("INA1.txt", "r"); /* open the file for reading */
if (fpin == NULL)
{
fprintf(stdout, "Cannot open input file - Bye\n");
return(-1); /* if problem, exit program*/
}
/*ASSUMPTIONS: the file is not empty and contains has at least 1 set of matrices*/
/* Add while loop after testing a single iteration */
RdMatrix(fpin, &A, &rowA, &columnA);
RdMatrix(fpin, &B, &rowB, &columnB);
PrMat(&A, rowA, columnA);
PrMat(&B, rowA, columnB);
fclose(fpin); /* close the file */
return (0);
}
#包括
#定义最大尺寸10
文件*fpin;
int RdRowSize(文件*文件)
{
int行;
fscanf(文件“%d”行和行);
返回行;
}
int RdColumnSize(文件*文件)
{
int col;
fscanf(文件“%d”和列(&col);
返回列;
}
无效RdMatrix(文件*文件,int(*矩阵)[MAXSIZE][MAXSIZE],int*行,int*列)
{
int数据;
int matRow=RdRowSize(文件);
int matCol=RdColumnSize(文件);
*row=matRow;
*列=matCol;
int i,j;
printf(“\n============================\n加载矩阵\n============================\n”);
对于(i=0;i
然后它必须打开的文件名为INA1.txt当引用元素时,应该使用
(*matrix)[i][j]
而不是*matrix[i][j]
。
另外,当打印B矩阵时,它应该是
rowB
,而不是rowA
您能显示完整的代码(包括主功能)吗?发布可编译代码有助于我们帮助您;-)。我相信你是对的,但这里真正的问题只是打字错误…;)*矩阵周围的括号修复了它。那只小罗后来会咬我的。非常感谢。
1 2
3 4
9 8
7 6
#include <stdio.h>
#define MAXSIZE 10
FILE *fpin;
int RdRowSize(FILE *file)
{
int row;
fscanf(file, "%d", &row);
return row;
}
int RdColumnSize(FILE *file)
{
int col;
fscanf(file, "%d", &col);
return col;
}
void RdMatrix(FILE *file, int (*matrix)[MAXSIZE][MAXSIZE], int *row, int *column)
{
int data;
int matRow = RdRowSize(file);
int matCol = RdColumnSize(file);
*row = matRow;
*column = matCol;
int i, j;
printf("\n=====================\nLoading Matrix\n=====================\n");
for (i = 0; i < matRow; i++)
{
for (j = 0; j < matCol; j++)
{
fscanf(file, "%d", &data);
*matrix[i][j] = data;
}
}
}
void PrMat(int(*matrix)[MAXSIZE][MAXSIZE], int row, int col)
{
int i, j;
printf("\n");
for (i = 0; i < row; i++)
{
for (j = 0; j < col; j++)
{
printf("%d ", *matrix[i][j]);
}
printf("\n");
}
printf("\n");
}
int main(void)
{
int RsizeM, CsizeM; /*matrix row size and column size*/
int A[MAXSIZE][MAXSIZE], B[MAXSIZE][MAXSIZE]; /*the two matrices*/
int rowA=0, columnA=0, rowB=0, columnB=0; /* the row and column sizes of A and B */
/*open input file - file name is hardcoded*/
fpin = fopen("INA1.txt", "r"); /* open the file for reading */
if (fpin == NULL)
{
fprintf(stdout, "Cannot open input file - Bye\n");
return(-1); /* if problem, exit program*/
}
/*ASSUMPTIONS: the file is not empty and contains has at least 1 set of matrices*/
/* Add while loop after testing a single iteration */
RdMatrix(fpin, &A, &rowA, &columnA);
RdMatrix(fpin, &B, &rowB, &columnB);
PrMat(&A, rowA, columnA);
PrMat(&B, rowA, columnB);
fclose(fpin); /* close the file */
return (0);
}