Find maximum element of each column in a matrix in C++

Consider we have a matrix, our task is to find the maximum element of each column of that matrix and print them. This task is simple. For each column, reset the max, and find the max element, and print it. Let us see the code for better understanding.

Example

#include<iostream>
#define MAX 10
using namespace std;
void largestInEachCol(int mat[][MAX], int rows, int cols) {
   for (int i = 0; i < cols; i++) {
      int max_col_element = mat[0][i];
   for (int j = 1; j < rows; j++) {
      if (mat[j][i] > max_col_element)
         max_col_element = mat[j][i];
   }
   cout << max_col_element << endl;
   }
}
int main() {
   int row = 4, col = 4;
   int mat[][MAX] = { { 3, 4, 1, 81 },
      { 1, 84, 9, 11 },
      { 23, 7, 21, 1 },
      { 2, 1, 44, 5 }
   };
   largestInEachCol(mat, row, col);
}

Output

23
84
44
81

Arnab Chakraborty

Published on 01-Nov-2019 14:51:54