12.19 Ch 9 Program: Data visualization (C) Here is the answer in Java if it help
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Question
12.19 Ch 9 Program: Data visualization (C)
Here is the answer in Java if it helps: https://www.chegg.com/homework-help/questions-and-answers/really-need-help-understanding-write-code-properly-kind-long-thank-advance-help-received-5-q17993320
(1) Prompt the user for a title for data. Output the title.
ex.
Enter a title for the data:
Number of Novels Authored
You entered: Number of Novels Authored
(2) Prompt the user for the headers of two columns of a table. Output the column headers.
ex.
Enter the column 1 header:
Author name You entered: Author name
Enter the column 2 header:
Number of novels
You entered: Number of novels
(3) Prompt the user for data points. Data points must be in this format: string, int. Store the information before the comma into a string variable and the information after the comma into an integer. The user will enter -1 when they have finished entering data points. Output the data points. Store the string components of the data points in an array of strings. Store the integer components of the data points in an array of integers.
ex.
Enter a data point (-1 to stop input):
Jane Austen, 6
Data string: Jane Austen
Data integer: 6
(4) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message and prompt again for a valid data point.
ex.
Enter a data point (-1 to stop input): Ernest Hemingway 9 Error: No comma in string.
Enter a data point (-1 to stop input): Ernest, Hemingway, 9 Error: Too many commas in input.
(5) Output the information in a formatted table. The title is right justified with a width of 33. Column 1 has a width of 20. Column 2 has a width of 23.
ex.
Number of Novels Authored
Author name | Number of novels
--------------------------------------------
Jane Austen | 6
Charles Dickens | 20
Ernest Hemingway | 9
Jack Kerouac | 22
(6) Output the information as a formatted histogram. Each name is right justified with a width of 20
ex.
Jane Austen ******
Charles Dickens ********************
Ernest Hemingway *********
Jack Kerouac **********************
Explanation / Answer
PROGRAM
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<malloc.h>
int main()
{
char *name; // declare pointer characters name
char *names[50]; // declare group of names using pointer names
int num,*novel; // declare integer variable num and pointer novel
int i=0,j=0,k,t,p; // declare and initalize integer variables
// allocate memory for name(characters) and novel(intger) array variables
name=(char *)malloc(sizeof(char));
novel=(int *)malloc(sizeof(int));
printf(" Enter a data point (-1 to stop input): ");
while(1) // declre inifinity while loop
{
fflush(stdin);
names[i]=(char *)malloc(50*sizeof(char)); // allocate memory of names
printf(" Author name You entered: ");
gets(name); // read strings of names
printf(" Number of novels ");
scanf("%d",&num); // read integer novels
strcpy(names[i++],name); // assign strings into array of names
novel[j++]=num; // assign number of novels
if(num==-1||strcmp(name,"-1")==0) break; // check condition input is -1 exit from inifinity loop
}
// j contains total elements in the array
for(k=0;k<j-1;k++) // create for loop until j-1
{
printf(" %s| %d",names[k],novel[k]); //display actual values
}
printf(" ");
for(k=0;k<j-1;k++) // create for loop until j-1
{
p=novel[k]; // assign one by one novel elements into p
printf("%s ",names[k]); // display first names
for(t=1;t<=p;t++) // create for loop until novel number p for print *'s
printf("*");
printf(" "); // ones print stars then cursor goes next line
}
return 0;
}
OUTPUT-1
Enter a data point (-1 to stop input):
Author name You entered: Jane Austen
Number of novels 6
Author name You entered: Charles Dickens
Number of novels 20
Author name You entered: Ernest Hemingway
Number of novels 9
Author name You entered: Jack Kerouac
Number of novels 22
Author name You entered: -1
Number of novels -1
Jane Austen| 6
Charles Dickens| 20
Ernest Hemingway| 9
Jack Kerouac| 22
Jane Austen ******
Charles Dickens ********************
Ernest Hemingway *********
Jack Kerouac **********************
OUTPUT-2
Enter a data point (-1 to stop input):
Author name You entered: Jane Austen
Number of novels 6
Author name You entered: Charles Dickens
Number of novels 20
Author name You entered: Ernest Hemingway
Number of novels 9
Author name You entered: Jack Kerouac
Number of novels 22
Author name You entered: Washington
Number of novels 34
Author name You entered: -1
Number of novels -1
Jane Austen| 6
Charles Dickens| 20
Ernest Hemingway| 9
Jack Kerouac| 22
Washington| 34
Jane Austen ******
Charles Dickens ********************
Ernest Hemingway *********
Jack Kerouac **********************
Washington **********************************
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