Question

C Programming, getting data from a file and computing them into 5 parallel arrays so that they can be used for later calculation.

Also please avoid using structures at all costs for this code as they have not yet been covered.

# Melbourne Central Daily Pedestrian Counts day 2 2009 2009 2009 06 06 06 01 02 03 daycount 22663 22960 23618 4 2018 2018 02 02 27 28 33722 33164 4 There will always be two heading lines in all input files, and then rows of five values separated by "tab" characters ('\t' in C). Once the first two lines have been bypassed, each data line can be read using scanf("%d%d%d%d%d" , . . . ). The number in the fifth column is the pedestrian count for the day indicated by the dd/mm/yyyy date, with the fourth field, day, indicating the day of the week, numbered from Sunday to Saturday as integers 1 to 7 respectively. You can open these data files using jEdit if you wish to view them, and they can also be manipulated using Excel. Stage 1 - Control of Reading and Printing (marks up to 4/10) Your first program should read the entire input dataset into a collection of five parallel arrays (or, if you are adventurous, an array of struct), counting the data rows as they are read. The two heading lines should be discarded and not processed in any way.

Answer 1

c code:

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

//structure pedestrian
struct Pedestrian
{
//variables
int yyyy;
int mm;
int dd;
int day;
int dayCount;
};
int main()
{
struct Pedestrian p[4000]; //array of struct objects
int n=0;
FILE *fptr;
char line[256];

fptr=fopen("pedestrian.tsv","r");//file

if(!fptr)
{
printf("File not found\n");
return 1;
}
//ignore first two lines
fgets(line, sizeof(line), fptr);
fgets(line, sizeof(line), fptr);

//read and store in structure
while(!feof(fptr))
{
fscanf(fptr,"%d%d%d%d%d",&p[n].yyyy, &p[n].mm,&p[n].dd, &p[n].day, &p[n].dayCount);
n++; //line count
}

//print the results
printf("\nS1: Total data lines = %d", n);
printf("\nS1: First data line = %d/%d/%d, %d",p[0].dd,p[0].mm,p[0].yyyy,p[0].dayCount);
printf("\nS1: last data line = %d/%d/%d, %d",p[n-1].dd,p[n-1].mm,p[n-1].yyyy,p[n-1].dayCount);

return 0;
}

output:

İ DcppPedestrainFilebinDebug\PedestrainFile.exe S1: Total data lines-3 1: First data line1/6/2009. 22663 S1 last data line28/2/2018, 33164 Process returnedxG execution time :0.091 s Press any key to continue

//i have given the output for file with only 3 lines.. you can give n numbers in your file.. it works fine..

for any clarification, do comments, please give me thumbs up..