Thread: Column count from data file

Hi all,

I have a dat file called customer.dat with this content:

0 1.1 2 -0.3 4 ...
5 6 7 8 9 ...
10.1 11 12 13 99 ...
...
...

I have no prior idea about number of rows and columns. Below a sample code I have written using fgets. the output gives the number of rows. but I also want to calculate number of columns.

can anybody give me any idea...

Code:

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

int main() {
  FILE *dataFile;
  char fileName[100];
  char customer[100];
  int nRow = 0;


  printf("Enter the name of the file: ");
  fgets(fileName, sizeof(fileName), stdin);

  if((dataFile = fopen(fileName, "r")) == NULL) {
	 printf("Error Opening File.\n");
	 exit(1);
	 }
  
  while( fgets(customer, sizeof(customer), dataFile) != NULL ) {
	 nRow++;
	 printf("Row %d: %s\n",nRow, customer);
	 }

  fclose(dataFile);
  return 0;
  }