在本教程中，我们将讨论一个程序，以查找给定矩阵的每一行和每一列的总和。
为此，我们将得到一个说A * B的矩阵。我们的任务是遍历矩阵的所有元素，找到矩阵的每一行和每一列的总和。
#include <iostream>
using namespace std;
#define m 7
#define n 6
//计算每一行的总和
void calc_rsum(int arr[m][n]){
int i,j,sum = 0;
for (i = 0; i < 4; ++i) {
for (j = 0; j < 4; ++j) {
sum = sum + arr[i][j];
}
cout << "Sum of the row "<< i << ": " << sum << endl;
sum = 0;
}
}
//计算每列的总和
void calc_csum(int arr[m][n]) {
int i,j,sum = 0;
for (i = 0; i < 4; ++i) {
for (j = 0; j < 4; ++j) {
sum = sum + arr[j][i];
}
cout << "Sum of the column "<< i << ": " << sum <<endl;
sum = 0;
}
}
int main() {
int i,j;
int arr[m][n];
int x = 1;
for (i = 0; i < m; i++)
for (j = 0; j < n; j++)
arr[i][j] = x++;
calc_rsum(arr);
calc_csum(arr);
return 0;
}输出结果
Sum of the row 0: 10 Sum of the row 1: 34 Sum of the row 2: 58 Sum of the row 3: 82 Sum of the column 0: 40 Sum of the column 1: 44 Sum of the column 2: 48 Sum of the column 3: 52