#include <stdio.h>
	int ans[2][2];
void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2] );
 
int main(void) {
	int i,j;
	int x[2][2]={{1,2},{3,4}};
	int y[2][2]={{1,2},{3,4}};
	array_mul(x,y,ans);
	for(i=0;i<=1;i++){
		for(j=0;j<=1;j++){
			printf("%d ",*(ans[i]+j));
		}
		printf("\n");
	}
	return 0;
}
 
void array_mul(int (*x)[2],int (*y)[2],int (*ans)[2] ){
	int i,j;
	for(i=0;i<=1;i++){
		for(j=0;j<=1;j++){
		*(ans[i]+j)=*(x[i]+0)**(y[0]+j)+*(x[i]+1)**(y[1]+j);
		}
	}
}
 

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