Question

求矩阵乘法运算C++程序源代码！

Answer 1

#include <stdio.h>
int main ()
{int a[2][3]={{1,3,5},{7,9,11}};
int b[3][2]={6,0,2,0,4,1};
int c[2][2]={0};
int i,j,k;
for (i=0;i<2;i++)
for (j=0;j<2;j++)
for (k=0;k<3;k++)
c[i][j]+=a[i][k]*b[k][j];
for (i=0;i<2;i++)
{for (j=0;j<2;j++)
printf ("%4d",c[i][j]);
printf ("\n");}
while (1);
return 0;
}

Answer 2

#include<iostream>
#include<string>

using namespace std;
int main()
{
int a[3][3] = {{1,2,3},{4,5,6},{7,8,9}};
int b[3][3] = {{1,2,3},{4,5,6},{7,8,9}};
int c[3][3] ={0};
int i,j,k;
for(i = 0;i<3;i++)
{
for(j =0;j<3;j++)
{
for(k = 0;k<3;k++)
{
c[i][j] += a[i][k]*b[k][j];
}
}
}
for(i = 0;i<3;i++)
{
for(j =0;j<3;j++)
{
cout<<" "<<c[i][j];
}
cout<<endl;
}

return 0;
}