41 lines
997 B
C
Executable File
41 lines
997 B
C
Executable File
#include <stdio.h>
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#include <stdlib.h>
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int main() {
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int i, j;
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/* TODO: define the 2D pointer variable here */
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int **pnumbers;
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/* TODO: complete the following line to allocate memory for holding three rows */
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pnumbers = (int **) malloc(3 *sizeof(int *));
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/* TODO: allocate memory for storing the individual elements in a row */
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pnumbers[0] = (int *) malloc(1 * sizeof(int));
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pnumbers[1] = (int *) malloc(2 * sizeof(int));
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pnumbers[2] = (int *) malloc(3 * sizeof(int));
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pnumbers[0][0] = 1;
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pnumbers[1][0] = 1;
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pnumbers[1][1] = 1;
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pnumbers[2][0] = 1;
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pnumbers[2][1] = 2;
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pnumbers[2][2] = 1;
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for (i = 0; i < 3; i++) {
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for (j = 0; j <= i; j++) {
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printf("%d", pnumbers[i][j]);
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}
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printf("\n");
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}
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for (i = 0; i < 3; i++) {
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/* TODO: free memory allocated for each row */
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free(pnumbers[i]);
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}
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/* TODO: free the top-level pointer */
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free(pnumbers);
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return 0;
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} |