Write a program that ask user to enter two integers X and Y, and two doubles min

Question

Write a program that ask user to enter two integers X and Y, and two doubles minZ maxZ. It then allocates a dynamic 2D array consisting of X rows and Y columns of double values, and sets each value in the 2D array by randomly generating a number between minZ and maxZ. If (minZ == maxZ), then simply set each value in the 2D array to minZ. Then print the overall sum, the sum of each row, and the sum of each column.

Here is a sample output: When input is 5 3 2.0 2.0 for X Y minZ maxZ Standard output starts with Overall sum = 30.0

Sum of each row

Row0 = 6.0

Row1 = 6.0

Row2 = 6.0

Row3 = 6.0

Row4 = 6.0

Sum of each column

10.0 10.0 10.0

#include #include

double RandomReal(double low, double high){

double d;

d = (double) rand() / ((double) RAND_MAX + 1);

return (low + d * (high - low));

}

int main(int argc, char* argv[]) {

int X, Y;

double minZ, maxZ; double **Arr2D; printf("Enter X Y minZ maxZ:");

scanf("%d %d %lf %lf", &X, &Y, &minZ, &maxZ);

/* dynamically create 2D array of doubles (X row, Y col),

* For each i, j * if (minZ == maxZ) Arr2D[i][j] = minZ;

* else Arr2D[i][j] = RandomReal(minZ, maxZ);

* Then find the sums we want using the given Arr2D !

*/

/* YOUR CODE */ return 0; } /* Don’t forget to include comments about the problem, yourself and each major step in your program! */

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>

double RandomReal(double low, double high){
double d;
// srand(time(0));
if (low == high) return low;
d = (double) rand() / ((double) RAND_MAX + 1);
return (low + d * (high - low));
}

int main(int argc, char* argv[]) {

int X, Y;
double minZ, maxZ;
double **Arr2D;
int i, j;
  
printf("Enter X Y minZ maxZ:");
scanf("%d %d %lf %lf", &X, &Y, &minZ, &maxZ);
  
//dynamic allocation
Arr2D = (double **)malloc(X * sizeof(double *)); // rows
for (i=0; i<X; i++)
Arr2D[i] = (double *)malloc(Y * sizeof(double)); // columns

// fill in data
for (i = 0; i < X; i++)
for (j = 0; j < Y; j++)
Arr2D[i][j] = RandomReal( minZ, maxZ);

// display content
for (i = 0; i < X; i++){
for (j = 0; j < Y; j++){
printf("%lf ", Arr2D[i][j]);
}
printf(" ");
}

double sum = 0.0, column_sum = 0.0, row_sum = 0.0;
for (i = 0; i < X; i++)
for (j = 0; j < Y; j++)
sum += Arr2D[i][j];
printf("overall sum is %lf ", sum);
  
//sum of each row
printf("Sum of each row");
for (i = 0; i < X; i++){
row_sum = 0.0;
for (j = 0; j < Y; j++){
row_sum += Arr2D[i][j];
}
printf("row %d =%lf ",i, row_sum);
}
  
//sum of each column
printf("Sum of each column ");
for (i = 0; i < Y; i++){
column_sum = 0.0;
for (j = 0; j < X; j++){
column_sum += Arr2D[j][i];
}
printf("column %d = %lf ",i, column_sum);
}

/* dynamically create 2D array of doubles (X row, Y col),

* For each i, j * if (minZ == maxZ) Arr2D[i][j] = minZ;

* else Arr2D[i][j] = RandomReal(minZ, maxZ);

* Then find the sums we want using the given Arr2D !

*/

/* YOUR CODE */
return 0;
}

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