2. The following code has a run time error. Explain the error and correct it. | final int ARRRAY_SIZE =3; int[] numaxxax new int [ARRRAY_SIZE]; String str; for (int i=0;i<= ARRRAX SIZE i++) { } str= JOptionPane, showInputDialog("Enter a number: "); numaxxax[i] = Integer.parseInt(str); 3. Write a void method called calculateClassAvg, which takes a double array named marks as a parameter and calculate and returns the average class marks. 4. Explain a better way to store 100 student IDs in a program other than using 100 integer variables?

2. The following code has a run time error. Explain the error and correct it. | final int ARRRAY_SIZE =3; int[] numaxxax new int [ARRRAY_SIZE]; String str; for (int i=0;i<= ARRRAX SIZE i++) { } str= JOptionPane, showInputDialog("Enter a number: "); numaxxax[i] = Integer.parseInt(str); 3. Write a void method called calculateClassAvg, which takes a double array named marks as a parameter and calculate and returns the average class marks. 4. Explain a better way to store 100 student IDs in a program other than using 100 integer variables?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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int a[10] = {0,1,2,3,4,5,6,7,8,9};int *m = &a[0];int *p = &a[5];int *q = &a[1]; p = (int) m + (int) p - (int) q; what is the value of of *p
#include <stdio.h>#include <stdlib.h> int MAX_SIZE = 10;int n = 0; //A counter variable which will keep track of number of elements in arr. void append(int *arr, int element){ if(n == MAX_SIZE) { MAX_SIZE = MAX_SIZE * 2; int *ptr = (int*)malloc(MAX_SIZE * sizeof(int)); //Copy elements of existing array to a new array for(int i=0;i<n;i++) { ptr[i] = arr[i]; } arr = ptr; n++; } arr[n] = element;} int get(int *arr, int index){ return arr[index];}int main(){ int *arr = (int*)malloc(MAX_SIZE * sizeof(int)); n = 10; for(int i=0;i<n;i++) arr[i] = i+1; printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n); printf("\nArray: "); for(int i=0;i<n;i++) printf("%d ", arr[i]); printf("\n\nAdding an element"); append(arr, 11); printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n);…
#include <stdio.h>#include <stdlib.h> int MAX_SIZE = 10;int n = 0; //A counter variable which will keep track of number of elements in arr. void append(int *arr, int element){ if(n == MAX_SIZE) { MAX_SIZE = MAX_SIZE * 2; int *ptr = (int*)malloc(MAX_SIZE * sizeof(int)); //Copy elements of existing array to a new array for(int i=0;i<n;i++) { ptr[i] = arr[i]; } arr = ptr; n++; } arr[n] = element;} int get(int *arr, int index){ return arr[index];}int main(){ int *arr = (int*)malloc(MAX_SIZE * sizeof(int)); n = 10; for(int i=0;i<n;i++) arr[i] = i+1; printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n); printf("\nArray: "); for(int i=0;i<n;i++) printf("%d ", arr[i]); printf("\n\nAdding an element"); append(arr, 11); printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n);…
#include <stdio.h>#include <stdlib.h> int MAX_SIZE = 10;int n = 0; //A counter variable which will keep track of number of elements in arr. void append(int *arr, int element){ if(n == MAX_SIZE) { MAX_SIZE = MAX_SIZE * 2; int *ptr = (int*)malloc(MAX_SIZE * sizeof(int)); //Copy elements of existing array to a new array for(int i=0;i<n;i++) { ptr[i] = arr[i]; } arr = ptr; n++; } arr[n] = element;} int get(int *arr, int index){ return arr[index];}int main(){ int *arr = (int*)malloc(MAX_SIZE * sizeof(int)); n = 10; for(int i=0;i<n;i++) arr[i] = i+1; printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n); printf("\nArray: "); for(int i=0;i<n;i++) printf("%d ", arr[i]); printf("\n\nAdding an element"); append(arr, 11); printf("\nArray size: %d", MAX_SIZE); printf("\nNumber of elements: %d", n);…
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const int size =4; int r1[size]; int i; for (i=0;i<2;i++) r1[i]= 2 * i+3; r1[3]=2 * i+ i; r1[2]=r1[3]; for (i=0;i
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#include <stdio.h> struct dna { int number; char text; char stringvalue[30]; }; int main() { struct dna dnavalue[5]; int i; for(i=0; i<4; i++) { printf("Sample %d\n",i+1); printf("Enter Number:\n"); scanf("%d", &dnavalue[i].number); printf("Enter Text :\n"); scanf("%c",&dnavalue[i].text); printf("Enter String :\n"); scanf("%s",dnavalue[i].stringvalue); } printf("Sample DNA Number Text String\n"); for(i=0; i<4; i++) { printf("%d\t\t", i+1); printf("%d\t\t", dnavalue[i].number); printf("%c\t\t", dnavalue[i].text); printf("%s", dnavalue[i].stringvalue); printf("\n"); } return 0; } Write comments on every line of this program explaining what's happening briefly