每行每列相加和相等(一个特殊的规律) int main(void) {int num,a,b,c,d,s[20][20]; scanf("%d",&num);a=num/2; if(a*2==num) printf("please input odd such as 1,3,5,7...."); else {for(c=0;c< num;c++) for(b=0;b< num;b++) s[c][b]=0; b=(num-1)/2;c=0;d=1; while(d