/* mat3.c */
#include <stdio.h>

double alkioiden_summa(double **mat, int riveja, int sarakkeita)
{
  int i,j; double summa=0;

  for (i=0; i<riveja; i++)
    for (j=0; j<sarakkeita; j++)
      summa +=mat[i][j];
  return summa;
}

int main(void)
{
  double s1,s2; 
  double r0[] = {1,2,3,4}, r1[] = {5,6,7,8}, r2[] = {9,0,1,2};
  double *mat[3];
  mat[0] = r0; mat[1] = r1; mat[2] = r2;

  s1 = alkioiden_summa(mat,2,3);
  s2 = alkioiden_summa(mat,3,4);

  printf("Summat on %5.2lf ja %5.2lf\n",s1,s2);

  return 0;
}