用C语言分配动态二维数组(结构体实现)

https://blog.csdn.net/u012077152/article/details/39619625

#include<stdio.h>
#include<stdlib.h>
typedef struct
{
	double **mat;
	int m;
	int n;
}Matrix;
void InitialMatrix(Matrix *T,int m,int n)
{
	int i;
	T->mat=(double**)malloc(m*sizeof(double*));
	for(i=0;i<m;i++)
		T->mat[i]=(double*)malloc(n*sizeof(double));
	T->m=m;				// m行
	T->n=n;				// n列
}
void FreeMatrix(Matrix *T)
{
	int i;
	for(i=0;i<(T->m);i++)
		free(T->mat[i]);
	free(T->mat);
}
void SetMatrix(Matrix *T,int m,int n)
{
	int i,j;
	for(i=0;i<(T->m);i++)
	{
		for(j=0;j<(T->n);j++)
			T->mat[i][j]=i+j;
	}
}
void PrintMatrix(Matrix *T)
{
	int i,j;
	for(i=0;i<(T->m);i++)
	{
		for(j=0;j<(T->n);j++)
			printf(" %3.0f",T->mat[i][j]);
		printf("\n");
	}
}
int main()
{
	Matrix p;
	int a,b;
	printf("Please enter the matrix row and column:");
	scanf("%d%d",&a,&b);
	InitialMatrix(&p,a,b);
	SetMatrix(&p,a,b);	
	PrintMatrix(&p);
	FreeMatrix(&p);
	return 0;
}