c语言求二维数组中所有元素的和答:int main(void){ int ar[3][3]= { {1,2,3},{4,5,6},{7,8,9} };int num;int i,j;int k = 0,sum=0;int (*ptr)[3];ptr = ar;num = sizeof(ar) / sizeof(ar[0]);printf("num = %d\n",num);printf("%d\n",*(*(ptr +0) + 1));for(i = 0; i < 3...
java语言二维数组中分别求每个数组元素的和答:int list[][]={{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15}}; for(int i=0;i<list.length;i++){ int sum = 0; for(int j=0;j<list[i].length;sum+=list[i][j],j++); System.out.println(sum+"\n"); } 运行结果:...
JAVA求一个2维数组所有元素的总和答:例如:一个四行三列的二维数组:public class a{ public static void main(String []args){ int sum=0;int a[][]={{2,3,4},{5,6,7},{3,4,6},{4,6,8}};for(int i=0;i<4;i++)for(int j=0;j<3;j++){ sum+=a[i][j];} System.out.println(sum);} } ...