Reading in basic C File I/O help

[masonTindol]

Hello everyone. Im fairly new to programming and could really use some help.

48604394 100.00 63.97 99.77
83304736 55.48 66.41 42.86
64035580 82.19 99.34 87.90
56635584 86.17 56.61 80.59
16209188 75.29 94.86 0.00

This is what i have so far:

#include <iostream>
#include <stdio.h>
#include <cmath>

using namespace std;


int main()
{

  FILE *fp;
  char studentID[100];
 
  fp = fopen("input.txt","r");
  
 
  while ( !feof (fp) )
    {
	  fscanf(fp,"%s[^\n]",studentID);
	  fgets (studentID , 100 , fp);
	}

  // printf("Student ID: %s\n", studentID);
  
 return 0;
}

So, the program i am to creating is reading in the above input.txt file. The first number of each line represents a StudentID. The following 3 numbers are grades of the student. However, my problem is that i need to read in ONLY the studentID portion and ignore the following 3 grades for the moment. I just have no clue how I should go about reading in the 48604394, then skip to the 83304736. The program should run regardless of how many studentIDs there are.

[mobotus]

I would read the first element in, and throw the rest into a variable I didn't care about.

Then you just need to process the sId howevery you need to.


Where sId and junk are strings and input is ifstream obj.

while (input >> sId){//Read until whitespace
	getline(input, junk);//Read rest of line
	std::cout << sId << std::endl;//Process sId
}