Question

Write a C Program that finds the row totals and column totals of a Matrix. The user is prompted to enter the numbers to fill in a two-dimensional array of any size (say 3x3). The program then finds the sum of row elements and prints them along-side rows, and finds the sum of columns and prints them along-side corresponding columns. You will need nested for loops

please help!

Answer 1

#include <stdio.h>

int main(void){
   int arr[3][3], i, j, n = 3, s = 0;
   
   printf("Enter 3x3 matrix:
");
   for(i = 0;i<n;i++){
      for(j = 0;j<n;j++){
         scanf("%d",&arr[i][j]);
      }
   }
   
   printf("Rows sum: ");
   for(i = 0;i<n;i++){
      s = 0;
      for(j = 0;j<n;j++){
         s += arr[i][j];
      }
      printf("%d ",s);
   }
   printf("
");
   
   printf("Columns sum: ");
   for(i = 0;i<n;i++){
      s = 0;
      for(j = 0;j<n;j++){
         s += arr[j][i];
      }
      printf("%d ",s);
   }
   printf("
");
   
   
   return (0);
}