矩阵的转置与相乘.cpp

c++算法的很经典的一些小练习 看了 觉得还可以 给大家分享一下！

#include<iostream.h>
#include<iomanip.h>
 template <typename T1,typename T2>void inverse(T1*mat1,T2*mat2,int a,int b);
 template <typename T1,typename T2>void multi(T1*mat1,T2*mat2,T2*result,int a,int b,int c);
 template <typename T>void output(T*mat,char*s,int a,int b);
 
 void main(){
	 int middle[6][3],result[6][4];
	 int matrix1[3][6]={8,10,12,23,1,3,5,7,9,2,4,6,34,45,56,2,4,6};
     int matrix2[3][4]={3,2,1,0,-1,-2,9,8,7,6,5,4};
	 char *s1="reault";
	 char *s2="middle";
	 inverse(matrix1,middle,6,3);
	 multi(middle,matrix2,result,6,3,4);
	 output(matrix1,"matrix1",3,6);
	 output(middle,s2,6,3);
	 output(matrix2,"matrix2",3,4);
	 output(result,s1,6,4);
 }

 template <typename T1,typename T2>void inverse(T1*mat1,T2*mat2,int a,int b){
	 int i,j;
	 for(i=0;i<b;i++)
		 for(j=0;j<a;j++)
			 mat2[j][i]=mat1[i][j];
		 return;
 }
 template <typename T1,typename T2>void multi(T1*mat1,T2*mat2,T2*result,int a,int b,int c){
	 for(int i=0;i<a;i++){
		 for(int j=0;j<c;j++){
			 result[i][j]=0;
			 for(int k=0;k<b;k++)
				 result[i][j]+=mat1[i][k]*mat2[k][j];
		 }
	 }
	 return;
 }
 template <typename T>void output(T*mat,char*s,int a,int b){
	 cout<<s<<endl;
	 for(int i=0;i<a;i++){
		 for(int j=0;j<b;j++)
			 cout<<setw(6)<<mat[i][j];
		 cout<<endl;
	 }
	 return;
 }