C语言中,求二维数组的每一行的和与平均值答:include <stdio.h>#include <string.h>int main(){int i=0,j=0,total=0;float avr=0;int a[3][3] = {{1,2,3},{4,5,6},{7,8,9}};for (i=0;i<3;i++){total=0;for (j=0;j<3;j++){total +=a[i][j];}avr = (float)(total/3.0);printf("sum[%d] aver[%...
利用指针数组求二维数组各行元素之和答:以下是利用指针数组求二维数组各行元素之和的代码:include <stdio.h>#define ROWS 3#define COLS 4 int main(){ int a[ROWS][COLS] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}}; int sum[ROWS] = {0}; int *p[ROWS]; // 定义指针数组,每个元素都指向一行的首地址 ...
java语言二维数组中分别求每个数组元素的和答:直接循环获取值之后做和即可。举例: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...