Read input from file perform operation and print on console in C

filein.txt

1.2    2.1    3.2

3.1    5.0    5.1

2.4    2.1    2.1

#include <stdio.h>

void main()

{

  int i,j;

  float A[3][3];

  float B[3][3];

  int num;

  FILE *inputMatrix=fopen("filein.txt","r");

  for(i=0;i<3;++i){

     for(j=0;j<3;++j){

         fscanf(inputMatrix,"%f",&A[i][j]);

     }

  }

  fclose(inputMatrix);

// Operation (Addition)

 for (i = 0; i < 3; i++)

    {

        for (j = 0; j < 3; j++)

        {

            B[i][j] = A[i][j] + A[i][j];

        }

    }

//Print

    for(i=0; i<3; i++)

    {

        for(j=0; j<3; j++)

        {

        printf("\t %f",B[i][j]);

        }

       printf("\n");

    }

}