write in programming language C, please Suppose we have the following structure

Question

write in programming language C, please

Suppose we have the following structure (record) declaration. typedef struct int xi int y: myDataT Write a program that dynamically allocates a triangular-like 2D array of the above structure with the given number of rows denoted by N such that the first row (row 0) will have one record, second row (row 1) will have two records, and so on. The last row (row N-1) will have N records. For example, when N is 5, conceptually the 2D array will look like y-? y-? y-? y-? y-? y-? y-? y-? y-? y-? y-? y-? y-? After allocating then memory, your program should initialize x and y fields in each cell by setting them to corresponding cells' row numbers and column numbers, respectively. So after the initialization, the above array will look like: y-0 y-l x-2 x-2 y-2 y-2 y-2 y-3 y-0 y-I Finally, your program should free up (release) the allocated memory.

Explanation / Answer

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

typedef struct {
int x;
int y;
} myDataT;

int main() {
// declaring the variables
int N, i, j;
// taking input for N
printf("Enter N: ");
scanf("%d", &N);
// allocating the space for number of rows(N)
myDataT **arr = (myDataT **)malloc(N * sizeof(myDataT *));;
// allocating the number of columns in each row
for (i = 0; i < N; i++){
arr[i] = (myDataT *)malloc((i + 1) * sizeof(myDataT));
}
// setting the value in each cell
for (i = 0; i < N; i++){
for (j = 0; j <= i; j++) {
arr[i][j].x = i;
arr[i][j].y = j;
}
}
// free all the memory
for (i = 0; i < N; i++){
free(arr[i]);
}
free(arr);
}

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