Programming Forums - View Single Post - Problems reading a double into an array using scanf()

bivhitscar · Oct 31st, 2005, 11:58 PM

This code is supposed to read values (type double) from user input and place them in an array, using a loop. Easy? No, apparantly not, here's the code:

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#include <stdio.h>

int main(void)
{
  double user[8];         //user's chosen numbers
  int i;                  //loop counter for user entered numbers

  for(i = 0; i <= 7; i++)
  {
    printf("Enter a number (%d to go): ", 8 - i);
    scanf("%lf", &user[i]);

  }

  return 0;
}

When I run this, I enter my first number and get this error:

Runtime error R6002
- floating point not loaded

Googled the error, but didn't get anything very definitive.

But if I use scanf to read the number to 'temp' then on the next line read 'temp' into user[i] - it works fine.

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scanf("%lf", &temp);
user[i] = temp;

It also worked if I just added a line right after scanf, printing what the value of i and user[i] was.

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scanf("%lf", &user[i]);
printf("user[%d] = %f", i, user[i]);

I can't figure out why this doesn't work.

And if anyone has issues with me using scanf(), I already know there's better options, but I'm learning from a book and I should technically be able to do this.

Oct 31st, 2005, 11:58 PM	#1
bivhitscar Hobbyist Programmer Join Date: Oct 2005 Location: Melbourne, Australia Posts: 126 Rep Power: 3	Problems reading a double into an array using scanf() This code is supposed to read values (type double) from user input and place them in an array, using a loop. Easy? No, apparantly not, here's the code: (Toggle Plain Text) #include <stdio.h> int main(void) { double user[8]; //user's chosen numbers int i; //loop counter for user entered numbers for(i = 0; i <= 7; i++) { printf("Enter a number (%d to go): ", 8 - i); scanf("%lf", &user[i]); } return 0; } #include <stdio.h> int main(void) { double user[8]; //user's chosen numbers int i; //loop counter for user entered numbers for(i = 0; i <= 7; i++) { printf("Enter a number (%d to go): ", 8 - i); scanf("%lf", &user[i]); } return 0; } When I run this, I enter my first number and get this error: Runtime error R6002 - floating point not loaded Googled the error, but didn't get anything very definitive. But if I use scanf to read the number to 'temp' then on the next line read 'temp' into user[i] - it works fine. (Toggle Plain Text) scanf("%lf", &temp); user[i] = temp; scanf("%lf", &temp); user[i] = temp; It also worked if I just added a line right after scanf, printing what the value of i and user[i] was. (Toggle Plain Text) scanf("%lf", &user[i]); printf("user[%d] = %f", i, user[i]); scanf("%lf", &user[i]); printf("user[%d] = %f", i, user[i]); I can't figure out why this doesn't work. And if anyone has issues with me using scanf(), I already know there's better options, but I'm learning from a book and I should technically be able to do this. __________________ it's ironic considerate rarity patron of love higher knowledge engulfs me...