How to perform division operator on struct?

Question

I have a struct containing three numbers: number1, number2, number3. Then, I want to perform division operators on them: (number1)/(number2+number3).

typedef struct {
    int number1;
    int number2;
    int number3;
    double ratio;
} table;

I tried to divide them like this:

for(int a = 0; a < 5; a++)
{
     for(int b = 0; b < 3; b++)
     {
     table[a][b].ratio = ((table[a][b].number1)/(table[a][b].number2 + data[a][b].number3));
     }
}

Should I divide structures using a repeated subtraction of dividend and divisor till the dividend becomes less than the divisor? Or is there any other approaches? I need to get double values, for example:

table[0][0].number1 = 1;
table[0][0].number2 = 2;
table[0][0].num3 = 3;

Then,

table[0][0].ration = 1/5=0.2

Answer 1

Your code seems right. All that's missing is a casting to double before you do your division, something like:

table[a][b].ratio = ((double)(table[a][b].number1)) /
                    (table[a][b].number2 + data[a][b].number3);

If one of the operands is a floating point number in C, the division becomes a floating point division.