/* array arithmetic */

/* note: this is the same as a matrix subtraction */

#include<stdio.h>

int main()
{
	int i, j;
	float values[3][4] = {{28.5, 46.3, 57.9, 72.6},
                              {14.3, 15.7, 31.4, 19.4},
                              {48.9, 13.9, 90.6, 57.8}};
	float values2[3][4] = {{1.5, 2.2, 3.5, 9.2},
                               {2.0, 3.0, 4.0, 5.0},
                               {4.4, 5.5, 3.2, 1.5}};
	float values3[3][4];


	/* Add array 'values' to 'values2' and store result in 'values3' */
	for (i=0; i<3; i++)
		for (j=0; j<4; j++)
			values3[i][j] = values[i][j] - values2[i][j];

	/* print out the values */
	printf("Array 'values':\n");
	for (i=0; i<3; i++)
	{
		for (j=0; j<4; j++)
		{
			printf("%4.2f ", values[i][j]);
		}
		printf("\n");
	}

	printf("\n\n");

        /* print out the values2 */
	printf("Array 'values2':\n");
        for (i=0; i<3; i++)
        {
                for (j=0; j<4; j++)
                {
                        printf("%4.2f ", values2[i][j]);
                }
                printf("\n");
        }

	printf("\n\n");

        /* print out the values3 */
        printf("Array 'values3':\n");
        for (i=0; i<3; i++)
        {
                for (j=0; j<4; j++)
                {
                        printf("%4.2f ", values3[i][j]);
                }
                printf("\n");
        }

}