#include <stdio.h>
    main()
{
  float a[3][4]={4.3, 6.4, 3.6, 5.5, 3.4, 5.3, 2.7, 7.6, 5.6, 4.6, 7.5, 4.5}   
  float b[4][5]={4.5, 4.5, 7.1, 1.9, 3.4, 5.4, 7.9, 7.6, 4.3, 6.5, 3.3, 2.1} , 
  float c[3][5];
  int i, j, k;
    for (i=0; i<3; i++) 
     {
      for (j=0; j<5; j++) 
       {
        c[i][j] = 0.0;
          for (k=0; k<4; k++)
            {
              c[i][j] += a[i][k] * b[k][j];
             } 
       printf("c[%d][%d]= %5.2f  ",i+1,j+1,c[i][j]);
        }	
       printf("\n");
      }
}