从.txt文件中读取数字并将它们存储在C中的数组中

Question

I've been trying to figure out how to read the scores and storing them in array. been trying for sometime and its clearly not working out for me. Please help.

//ID    scores1 and 2
2000    62  40
3199    92  97
4012    75  65
6547    89  81
1017    95  95//.txtfile


int readresults (FILE* results , int* studID , int* score1 , int* score2);

{
// Local Declarations
int *studID[];
int *score1[];
int *score2[];

// Statements
check = fscanf(results , "%d%d%d",*studID[],score1[],score2[]);
if (check == EOF)
    return 0;
else if (check !=3)
    {
        printf("\aError reading data\n");
        return 0;
    } // if
else
    return 1;

Answer 1

• You declare variables twice, once in parameter list and once in "local declarations".

• The function brace is not closed.

• One fscanf can only read a number of items specified by its format string, in this case 3 ( "%d%d%d" ). It reads numbers, not arrays. To fill an array, you need a loop ( while , or for ).

EDIT

Okay, here's one way to do it:

#define MAX 50
#include <stdio.h>

int readresults(FILE *results, int *studID, int *score1, int *score2) {
  int i, items;
  for (i = 0;
      i < MAX && (items = fscanf(results, "%d%d%d", studID + i, score1 + i, score2 + i)) != EOF;
      i++) {
    if (items != 3) {
      fprintf(stderr, "Error reading data\n");
      return -1; // convention: non-0 is error
    }
  }
  return 0; // convention: 0 is okay
}

int main() {
  FILE *f = fopen("a.txt", "r");
  int studID[MAX];
  int score1[MAX];
  int score2[MAX];
  readresults(f, studID, score1, score2);
}

Answer 2

If you want to call that function just once and have it read the scores for all of the students, you should use something like this:

int i=0;
check = fscanf(results , "%d %d %d",&id[i],&score1[i],&score2[i]);
while(check!=EOF){
        i++;
        check = fscanf(results , "%d %d %d",&id[i],&score1[i],&score2[i]);
    }