Why program crashes after fscanf-CodePudding

I'am trying to read a data from a textfile with fscanf but after readData function program is crashing. It's not entering the loop statement. In the console there is just printing data is read. When i tried to reading data in main it's working but i need to read in function.

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

void readData(int array[10][3]);

int main(void)
{
    int data[10][3],i;
    
    readData(data);
    
    for(i=0; i<10; i  )
    {
        printf("%d %d %d \n",data[i][0],data[i][1],data[i][2]);
    }
}

void readData(array[10][3])
{
    int i;
    
    FILE *ptr = fopen("phonedata.txt","r");
    if(ptr == NULL)
    {
        printf("There is no file");
    }
    else
    {
        printf("Data is read");
    }
    
    while(fscanf(ptr, "%d %d %d",&array[i][0],&array[i][1],array[i][2]) != EOF);
    {
        i  ;
    }
}

CodePudding user response：

For starters you forgot to specify the type of the parameter in the function definition

void readData(array[10][3])

you need to write

void readData(int array[10][3])

Within the function you are using the uninitialized variable i.

int i;

You have to write

int i = 0;

You have also to remove the semicolon after the while loop

    while(fscanf(ptr, "%d %d %d",&array[i][0],&array[i][1],array[i][2]) != EOF);

And it is better to write the condition like

    while( i < 10 && fscanf(ptr, "%d %d %d",&array[i][0],&array[i][1],array[i][2]) == 3)

And you need to place the while loop in the else statement

else
{
    printf("Data is read");

    while( i < 10 && fscanf(ptr, "%d %d %d",&array[i][0],&array[i][1],array[i][2]) == 3)
    {
        i  ;
    }
}

And you should return from the function the number of "rows" filled.

And before exiting the function the file must be closed.

fclose( ptr );