Question

Hi i am working on Grade Calculation. My problem here is if the length of string array is longer that int array it works skipping the last 2 grades.
ex:

int[] unit = new int[] {1,-3,3,4};
string[] letter_grade = new string[] {"A", "B","B","W","D","F"};

but if length of int array longer than that of string array its not working its throwing error Index was outside the bounds of the array.

int[] unit = new int[] {1,-3,3,4,5,6,7};
string[] letter_grade = new string[] {"A", "B","B"};

so my question how do i make it work for both??

int length = unit.Length;
int no_units = length;
double totalGrade_Points = 0.0;
int totalno_units = 0;
totalGPA = 0;

for (int i = 0; i < unit.Length; i++)
{
  entrygot = findGpaListentry(letter_grade[i]); //Index was outside the bounds of the array.
  if (entrygot != null)
  {
     //some code calculation
  }
}

Answer 1

For array indexing you must have starting and stopping condition defined very well. For accessing two arrays either they must be equal or they are compared under certain valid conditions. Have a look at this:

for(int i=0;i<unit.length;i++){
entrygot = findGpaListentry(letter_grade[i]);// only if letter_grade is valid under all values of i i.e unit.length
}



// either you have to check as if;
    if(lenght_of_letter_grade < i-1)
    //then access 
    entrygot = findGpaListentry(letter_grade[i]);