Question

The objective is to use each row of the first column as a starting point to come up with a sum of absolute value of differences . For each row, a sum will be calculated, therefore, 5 sums must be calculated. Each sum will be placed into the array, sumList[ ].

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define ROWS 5
#define COLS 6
void calcSums(int topog[ROWS][COLS], int sumList[ROWS] );
int main()
{
int topography[ROWS][COLS] =
{
{ 3011, 2800, 2852, 2808, 2791, 2818 },
{ 2972, 2937, 2886, 2860, 2830, 2748 },
{ 2937, 2959, 2913, 2864, 2791, 2742 },
{ 2999, 2888, 2986, 2910, 2821, 2754 },
{ 2909, 3816, 2893, 2997, 2962, 2798 }
};
int sumList[ROWS] = {0};
int r,c;
/* student to implement calcSums */
calcSums(topography, sumList ); //pass in topography, get back list of elevation sums

for(r=0; r < ROWS; r++)
printf("%8d %8d \n",r, sumList[r]); //should display

return 0;
}
/*
* Receives 2d matrix that represents topography
* and uses this data to calculate an elevation path sum for each
* row.
* Input: topog[][]
* Output: sum[]
*
*/
void calcSums(int topog[ROWS][COLS], int sums[ROWS] ) {
int i,j;
for( i=0; i<ROWS; i++){
for (j= 0; j< COLS; j++){
//placeholder. Calculate correct sums

int sum= abs(topog[i][j])- abs(topog[i][j+1]);
int sum2 = abs(topog[i+1][j])- abs(topog[i][j+1]);
int sum3 = abs(topog[i-1][j])- abs(topog[i][j+1]);
if (sum < sum2&& sum< sums3){
sums[i] = sum;
}
if (sum2 < sum1 && sum2< sums3){
sums[i] = sum;
}
if (sum3 < sum1&& sum3< sums2){
sums[i] = sum;
}
sums [i] = topog

}}

sums[i] = 99999; //place sums in this array. One sum per row

}

Answer 1

If you have any doubts, please give me comment...

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#define ROWS 5

#define COLS 6

void calcSums(int topog[ROWS][COLS], int sumList[ROWS]);

int main()

{

int topography[ROWS][COLS] = {{3011, 2800, 2852, 2808, 2791, 2818},

{2972, 2937, 2886, 2860, 2830, 2748},

{2937, 2959, 2913, 2864, 2791, 2742},

{2999, 2888, 2986, 2910, 2821, 2754},

{2909, 3816, 2893, 2997, 2962, 2798}};

int sumList[ROWS] = {0};

int r, c;

/* student to implement calcSums */

calcSums(topography,

sumList); // pass in topography, get back list of elevation sums

for (r = 0; r < ROWS; r++)

printf("%8d %8d ", r, sumList[r]); // should display

return 0;

}

/*

* Receives 2d matrix that represents topography

* and uses this data to calculate an elevation path sum for each

* row.

* Input: topog[][]

* Output: sum[]

*

*/

void calcSums(int topog[ROWS][COLS], int sums[ROWS])

{

int i, j;

for (i = 0; i < ROWS; i++)

{

sums[i] = 0;

for (j = 1; j < COLS; j++)

sums[i] += abs(topog[i][j] - topog[i][j - 1]);

}

}