#define M 3void main(){int a[M][M],i,j,sum=0;printf("please input a %d*%d integer array:\n",M,M);for(i=0;i<M;i++) for(j=0;j<M;j++) scanf("%d",&a[i][j]);printf(" 展开
#define M 3void main(){int a[M][M],i,j,sum=0;printf("please input a %d*%d integer array:\n",M,M);for(i=0;i<M;i++) for(j=0;j<M;j++) scanf("%d",&a[i][j]);printf("the %d*%d integer array is:\n",M,M);for(i=0;i<M;i++) {for(j=0;j<M;j++) printf("%d ",a[i][j]);printf("\n");} for(i=0;i<M;i++) sum+=a[i][i]+a[i][M-1-i];if(M%2==1) sum-=a[M/2][M/2];printf("the sum of diagonal is: %d\n",sum);} 收起
