求a=(A-B)U C A,B,C为三个数组

假定数组大小m*n 是 3x3， 结果在c.

#include <stdio.h>
#include <stdlib.h>

void main()
{
int a[3][3] ={1,2,3,4,5,6,7,8,9};
int b[3][3] ={9,8,7,6,5,4,3,2,1};
int c[3][3] ={1,1,1,1,1,1,1,1,1};
int i,j,n=3,m=3;

for (j=0;j<n;j++)
for (i=0;i<m;i++)
{c[i][j] = (a[i][j] - b[i][j]) && c[i][j];
printf("%d ",c[i][j]);
};
}