//5、矩阵乘法
#include
int a[3][4]={{1,2,3,4},{5,6,7,8},{9,10,11,12}}.
int b[4][3]={{12,11,10},{9,8,7},{6,5,4},{3,2,1}}.
int c[3][3].
void main(){
int i ,j, k.
printf("矩阵1\n").
for(i=0.i<3.i ){
for(j=0.j<4.j )
printf("d",a[i][j]).
printf("\n").
}
printf("矩阵2\n").
for(k=0.k<4.k ){
for(j=0.j<3.j )
printf("d",b[k][j]).
printf("\n").
}
for(i=0.i<3.i )
for(j=0.j<4.j )
for(k=0.k<3.k ){
c[i][k]=c[i][k] a[i][j]*b[j][k].
}
printf("矩阵3\n").
for(i=0.i<3.i ){
for(k=0.k<3.k )
printf("d",c[i][k]).
printf("\n").
}
}